I wasn't sure last year but it's pretty clear from today's stage that Froome could have destroyed Wiggins in the mountains last year.
Froome must have been chomping at the bit for the last year at least for a chance to show what he could really do given a free rein. I can't see any other GC contenders being able to put any pressure on him from here on in.
It will be interesting to see what he does from here in the Tour. Attack in the mountains and gain even more time or just control things with the team (like last year) and take time out of the other GC contenders in the time trials.
I suspect the latter will be the case.