Yea, Eckhoff has been fast for five seasons now, she was putting in good ski times in December, just shooting badly, and even here, she didn't shoot well in the pursuit but gained several places. With Olsbu I've never quite got over how she suddenly became significantly faster at the home World Championships in Holmenkollen two years ago - she'd been one of those "can potentially contend for the flower ceremony with 19 or 20/20 in a pursuit after a decent sprint, or in an Individual" kind of athletes and then suddenly at those World Championships she could hold off people like Dahlmeier, Dorin Habert and Koukalová on a final lap charge. But I've got used to her being at that level and she was pretty good early in the season.
Kuzmina's year in general I think has been very weird, she was never this fast in peak years even, although it's harder to judge her on equal terms because Domracheva's had almost two years out in the middle of this period (I know, so has Nastya) and Kaisa is the only woman at the forefront of proceedings older than her, and she is getting less consistent now. But Kuzmina has been making people like Denise Herrmann look distinctly average on the skis. The fact that she has this career where she disappears for years at a time for childbirth and other commitments, but always has great form in Olympic seasons, is obviously going to raise a lot of eyebrows. It's not like she's super-peaked for the championships though, but whether that makes it better or worse I don't know, since obviously it's like a bell curve - if you're way above your normal level only at major championships you're an outlier at one end, but if you're one of the best in every single race all season without having any weaker periods, like a Fourcade or Tora Berger a few years ago, then you're an outlier at the other.
Conspicuously absent, however, have been the Americans. They peaked so beautifully for the World Championships last season with Lowell Bailey getting his first career win in the Individual and Susan Dunklee getting a podium in the Mass Start as well. Here, however, the only time I've even heard them mentioned was when the IBU decided at their special committee meeting that they aren't going to cancel the Russian rounds of the World and IBU Cup at Tyumen, Uvat' and Khanty-Mansiysk, and Bailey and Dunklee both whined in the press about it and how they were going to boycott the rounds because they couldn't trust the IBU to be anti-doping unless they prevent any Russian fans getting to see competitions.