Re: Frame sizing among the prosI agree with the small tweaks comments, especially for the domestic pros. My Klein QPro is an ex-D3 bike that was custom built with a top tube of 2 cm longer, nothing radical. You wouldn't realize it unless you measured it. Lots of times bikes get rebadged because a rider doesn't want to ride the sponsor's bike. The team manager hooks up with a bike sponsor based on the business deal, not the rider's preference. The sponsor doesn't care so long as the unwitting public still sees the correct logos. Also, some of the sprinters may favor a smaller frame, even if it is off the shelf.
A bike is a bike, go out and ride whatever you feel comfy on.