The Hitch said:
So Wiggins could maintain the pace froome set but Nibali could not. That's all one needs to know to know who the stronger climber was.
I think you need to ask yourself what Nibali
needed
to do that day in the grand scheme of things, and compare it to what Wiggins needed to do.
The answer meant added stress for Nibali. Cycle racing isn't just a physical challenge.
I don't know if you've done any bike racing and I'd still read and value your opinion if you've never turned a pedal in anger, but I can tell you that when the opposition is very near to you in ability it can be the stronger mind that wins.
I won't reveal how I found this out
Was Nibali isolated? What difference did that make to the possibilities of what Froome and Wiggins
could do that day regardless of what they needed to do, or in fact did?
Nibali would have been thinking those things over and once he tried and failed to outgun the pair he knew he was done.