Roger Hammond highlighted what I think was a crucial mistake by Froome on Saturday's tage to Andorra that possibly led to him losing time to all 3 main rivals that he otherwise might not have done. When Froome attacked 1st time and Contador went with him leaving Purito and Val Verde behind he sat up after a relatively short distance seemingly because Contador was refusing to work with him. Froome needed to carry on riding at that point and accept that Contador might beat him at the top but they would most likely have both taken time out of the other 2.
A lot has been made of the superior climbing ability of Froome over Wiggins but it seems to me that he lacks the tactical savvy of Wiggins and that may well be where he falls short in winning his 1st Grand tour.
That said, on the previous unphill finish Froome dropped Contador and Valverde so it might be that this was just a one off.
All the uphill finishes so far have been relatively short and steep which definitely suit the 3 Spaniards over Froome. Will be interesting to see how things develop when we get the longer climbs that allow Sky to just pile on the constant pressure for km after km. I recall last year Rodriguez being highly fancied in the early part of last years Vuelta but when the long climbs came he was distanced by the constant pace of Froome & Wiggins. Purito might have better form this year to prevent that happening of course....