If they KNOW for sure Contador's knee is bothering him, they will attack like crazy. If they suspect Contador's knee is fine, I think they hold back and as versus calls "heads of state" will cross close together. As they say, you can't win the Tour in a day but you can certainly lose it in a day.
I do wonder how much scouting and spying goes on among teams.
Actually the wording looks like it was changed in a paragraph and thats off now too. The forecast hasn't changed, so you can just check out the stage forecasts under the bold. I wish I had seen your guys posts an hour ago, I just got done with work.
13 is meh for a mountain stage. Long decent after the HC climb and space between the two climbs. 14 is a brutish stage which will be a tough challenge.
The one that looks to be the meat gridner is stage 18.