Cobo power estimation on Angliru in 2011 Vuelta

A few posts ago I posted a plot of VAM numbers for Cobo in the Vuelta stage up the horrific Angliru climb. Of course, Cobo went on to win the race.



VAMs are difficult to assess. More relevant is power: in particular, watts/kg. Making liberal assumptions, I tried to come up with a W/kg estimate of Cobo on the climb (or in the early bit, the leader of the group containing Cobo). Here's the result (power at the crank, not hub, assuming 2.5% drivetrain losses):



Impressive for sure, but still generally below the Armstrong-era "6.7 W/kg" attributed by Coyle to Ferrari.