It isn't Contador's later start time that Cancellara is upset about. Remember, Cancellara lost by only 3 seconds to Alberto. Of course he is upset. And he is correct in that Contador had 2 lead motorcycles in front of him. On that basis, and his arguments, that Contador unfairly benefitted from these lead motorcycles, then he IS disputing Contador's time, and thus his win over him. He states that this unfair advantage (two lead motorcycles) is the reason why Contador beat him.
"The reigning Olympic time trial champion doesn’t lose against the clock very often when he’s on form, and Cancellara said he had a pretty good idea of why he lost."
Velonews reporting this now:
Cancellara says motorcycles helped Contador
http://tour-de-france.velonews.com/a...elped-contador