The problem with the % marker on ski time is, if it's absolute there's the risk of it being skewed by conditions and courses (the Antholz course is at high altitude, but is less challenging than many on the World Cup circuit), and if it's relative to competition then there's the risk of it being skewed by opposition (the Norwegian and Russian first teams being absent mean several skiers who would typically have been outpacing much of the German and French teams were not there to do so).
Here are the fastest people for each leg of the men's relay:
1 Lesser 17:12.0 Ferry 16:24.8 Lindström 15:54.8 Fourcade 15:58.8
2 Os +2.1 L'Abeé-Lund +3.0 Peiffer +1.2 Bergman +0.0
3 Fourcade +6.2 Birnbacher +9.7 Beatrix +33.5 Bjoentegaard +11.2
4 Weger +23.1 Slepov +16.9 Green +40.6 Schempp +11.3
5 Savitskiy +28.8 Chepelin +21.8 Eng +42.2 Lapshin +16.4
Lesser's position I see no problem with, few fast skiers against him and he's a multiple World Cup podium athlete. Birnbacher's and Schempp's ski speeds are in fact unexceptional (while Schempp won both individual races in the weekend, it was his shooting that held the key as he did so with the 5th fastest ski time in the sprint but only the 30th fastest (!) in the pursuit). Which just leaves Peiffer. Personally I think it is him and Christoph Stephan who are the most interesting in terms of ski level; Stephan had been pretty quick but unreliable before he was dropped from the squad in 2010-11. He fought back into consideration last season, but his ski speed, good on the IBU Cup, was some way slower than it had previously been. This season, in the pre-season races, he was not much quicker, but back on the World Cup his pace has jumped right back to World Cup competitive levels, even setting a shock fastest ski time in the Annecy pursuit, where he gained nine (!) positions on the final lap. And while many of those positions were not strong skiers - Mesotitsch, Smith - there were also the likes of Dmitry Malyshko and Tim Burke. Peiffer is a hard one to work out. In 2010-11 and 2011-12 he was quiet in the early part of the season but became stronger as the season went on, and won races including World Championships events, mainly on the strength of his ski speed, and was 4th in the overall World Cup both times. Last season, however, he was dreadful after a promising start at Östersund, and this season has started off similarly. Peiffer has also traditionally done well at Antholz (he won his first ever World Cup race here in 2009-10 and has been a fixture in the top 10 in most races for the following two seasons here). However, before Christmas he was 20th fastest on the World circuit, here he was 4th fastest in the sprint and 10th fastest in pursuit, as well as being far above all but Lindström on his relay leg.
Daniel Böhm's ski speed has also been about 3% better than last year's, but as he did so few races last season, and he has still been almost totally reliant on his shooting for results (hitting 20/20 but still losing positions in the Hochfilzen pursuit) I don't have so much in the way of questions about him. Nor do I really query the women, who are all clustered in the area between 10th and 30th fastest; Preuss and Dahlmeier are improving in ski speed, but then they are young, and they have been seen as potential phenoms for some time (Preuss podiuming Junior World Championships races as a 17-year-old comes to mind, and both were medallists as Juniors while still eligible for Youth races) and are more competitive on the skis in the shorter events, typically (exception in the Ruhpolding Individual where Preuss was fast, but that's on her home trails and she had excellent skis that day), Henkel is slower than she was last year and reliant on her shooting for success (which has been less than last year too), while Hildebrand is performing round about her historical norm. Evi's better than she was last year and significantly so, but then she'd been racing mostly IBU Cup races last year too.
In respect of the men in General, prior to Christmas their ski speed ranks were: Christoph Stephan 7th, Arnd Peiffer 20th, Simon Schempp 23rd, Erik Lesser 25th, Andi Birnbacher 31st, Florian Graf 32nd, Daniel Böhm 42nd. Once the races post-Christmas are taken into account they now have Peiffer 17th, Stephan 18th, Schempp 23rd, Birnbacher 31st, Graf 34th, Lesser 36th and Böhm 55th, so they have not made major progress in their home events, however it is notable that at Antholz their performances were markedly better, I'm just not convinced by the 3% figure quoted by Eurosport.
The French are another question. Martin Fourcade is one of those athletes who will be up at or near the top of the ski times more often than not and need not detain us. I assume the discussion relates primarily to the men, as the women, with the sole exception of Anaïs Bescond, are severely lacking in ski speed (Sophie Boilley hit all 10 targets in the sprint but couldn't even make the top 30, for example). Before Christmas, their best skier was Bescond, 11th fastest in the world, the next was Brunet, 37th. Obviously the lack of Marie Dorin-Habert skews that as, while not exactly competitive with Domracheva/Mäkäräinen/Gössner, she was at least able to produce a level on the skis that enabled her to be competitive with the best. Over 2012-13 Marie Dorin-Habert was the 10th fastest; following on from her Anaïs Bescond was 12th fastest (so her times before Christmas were not out of the ordinary for her), Boilley 56th, Bolliet 58th, Brunet 69th. At this point in the season, they have Bescond 13th, Brunet 50th, Bolliet 66th, Boilley 70th, Chevalier 80th... so if anything they are slower than they were. The exception is Brunet, but she was racing injured last season. Bescond had the 2nd fastest ski time in her win in the sprint in Antholz, but this reverted back to her typical norm, being 16th in the pursuit. But she is the only Frenchwoman currently capable on the skis.
So what of the French men? While Martin Fourcade is only outpaced this season by Lars Berger (who is an outlier given that he's only raced at two events, and the changing conditions that favoured him so well at Hochfilzen), the others are further down the line: Jean-Guillaume Beatrix 21st, Simon Desthieux 26th, Alexis Bœuf 46th, Simon Fourcade 49th, Quentin Fillon-Maillet 64th, Baptiste Jouty 73rd. Before Christmas they ranked somewhat differently: Simon Desthieux 11th, Jeangui Beatrix 13th, Alexis Bœuf 22nd, Simon Fourcade 52nd. At Antholz Beatrix set the 21st and 18th fastest times in the individual races, and was 30+ seconds behind Peiffer and Lindström in the relay; Bœuf, god only knows what's happened to him. He was a very competitive skier last year, and since Christmas he's dropped off a cliff. I assume he fell or had some technical issue in the relay as he was skiing competitively with L'Abée-Lund and Birnbacher, shot well enough to leave the range first, then lost fifty seconds on the final 2,5km, which is just ludicrous. Simon Fourcade is the one who's really stepped up, but even then the ski times are not stupendously better than they were, and only come back into line with where we might reasonably expect him to be (between 20 and 40), and it is that his shooting is faster and more accurate that he has come to be able to be competitive again. The real exception is Quentin Fillon-Maillet's incredible Antholz pursuit where he set the 6th fastest course time, which is so far out of his ordinary that it merits a proper mention.
So in all honesty, I don't know where this supposed improvement in the French skiers has come from. In truth there isn't that much of one in the German skiers either, but at least there is definitely one to speak of.