Perhaps, but you do not hold other riders to that same standard. For instance, Froome was not on peak form at Vuelta '14, yet you used this race as a clear example of Contador being a better climber. In this year's Giro, as Landa matched or surpassed Contador in the mountains, many people said that you could not draw conclusions because Conti still wasn't at his best.
My point is, very rarely do the stars align to where every rider is on their peak form at the same time. We have to draw careful conclusions with what we are seeing now, rather than write off a performance completely.