By the end of 3rd week I expect Froome to have at least 4 minute lead on 2nd in GC.
So I think even with weaker team, Sky could pull this off, as Froome is phenomenal by himself.
If Thomas gets better, the task will become easier obviously.
........
If contador doesn't get better, I am preety sure this is over anyway, his attacks at full form could damage Froome, but so far he's a shadow of what he can do at his best. Valverde is simply not good enough to really challenge Froome, and one other rider that could do damage in quitnana will be his dom.
So I think even with weaker team, Sky could pull this off, as Froome is phenomenal by himself.
If Thomas gets better, the task will become easier obviously.
........
If contador doesn't get better, I am preety sure this is over anyway, his attacks at full form could damage Froome, but so far he's a shadow of what he can do at his best. Valverde is simply not good enough to really challenge Froome, and one other rider that could do damage in quitnana will be his dom.