I find it a bit extraordinary that a guy who couldn't (or barely) be dropped by the best climbers in the world in 2009, 2011 and 2012 (didn't do too bad in 2013 either before he quit the Giro, seemed to be at his 2012 level) couldn't do it all anymore to the point of not being a factor in T-A...
So there is the weight issue, but it seems we never got "real" numbers there as he most likely was not 71 kg in 2012, closer to 65 I'm sure and now he's supposed to be 77? Hardly overweight for a 1m90 frame, although admittedly it's going to be a bit of a handicap on long 10% climbs I suppose...