this is not maths, man.
Today was tailwind in the last climb.
The year of Purito was very hot, I was there.
But there is always more things to consider. Matbe others years they speculate more, etc..., today some domestiques as Vicioso, Moreno, Herrada, Majka and Kiserlowski made the climb hard from the begining
, and simon clarke worked for Horner as well

, the peloton took it easy the day, as a solo breakaway won clearly for the first time.. maybe a yer motorbikes help more (this year for sure) you must consider a lot of things...
Nibali is not like in the Giro, they said and I see that, but maybe he is like in the Vuelta 2010, but not better, and that 14 second faster dont say he is better.
The only conclusion is that is was a good time for Horner.
I remember how Cobo and Froome sttopped sometimes, that is an important factor.