He attacked a number of times when it was (or at least seemed to be) unnecessary. Aru and Porte put digs into him which looked futile. He dislocated his shoulder and road the longest stage of the tour without any real issues. With the exception of one day he was incredibly strong.
The collective might of the Astana team rarely isolated him and couldn't use their superiority as a team to put him in real difficulty. For all his faults, Contador is a very tactically aware rider.
wiping the floor with them? only on Mortirolo. for the rest of the race he looked quite human.