Oh, it's that time of the year again.
Relative performance differentials between riders are the essence of racing.
However, it is the absolute performance levels that top riders have exhibited in the post covid (hahaha-) era that require an explanation. One strategy is to take a performance, work out the w/kg, and ask what it implies, physiologically.
Here is an attempt to decode Plateau se Beille from last year:
https://solaarjona.substack.com/p/data-analysis-of-stage-15-of-the
The basic framework is similar to what physiologists used when the w/kg based performance sniff tests were introduced some 15years ago, e.g.:
https://sportsscientists.com/2010/07/cycling-performance-what-is-possible/
I reckon the first piece as apologistic in that it seeks to chalk the performance of 6,8w/kg for 40min off as plausible. After a serious and informed discussion of the implications the author essentially sports the "he is just that good argument" as a one liner.
The latter piece is informative not only in that it essentially has similar analytics but it too discusses the implications of riding 40min at around 6,8w/kg. The author of that piece was of the opinion that topping 6-6,2w/kg would be suspicious. So quite a bit more conservative.
That said, the first piece too is informative in that uses the standard apparatus: the interplay of vo2max, fractional utilization, and efficiency. This way it helps to ground the discussion of the implications of that ride by presenting a neat table that maps a range of (NB: can't be arsed to check the calculations) of, say, implied vo2max values and how they are impacted when assumptions about fractional utilization and efficiency change.
As the first writer notes, what he reckons middle of the road assumptions (ie. Pog rode at 85% of vo2max and 23% efficiency) imply that Pog must have had a vo2max slightly higher than the highest ever value recorded in a lab test.
Amidst a tdf? After 4000 or so kJ during that day (contrary to what the author of the apologistic piece claims, I do think that expending that amount climbing/coasting matters and has implications vis-a-vis the last climb)?
So yeah, not buying it. Not that I buy Vinge either. But it's not about rider to rider differentials that begs most questions. It's the observed performance levels that require explanation first and foremost.
But maybe talent, Sola plus long threshold intervals, and short cranks are all that's required to reach the levels of Riis, Armstrong, et al.