Right--I was thinking about the mid-size one. 36/30 is actually a smaller gear than 34/28, though. They are prob using the mid-size cranks because they legitimately need a 52/11 since the leadouts are 40mph and THEN they start sprinting.
As Boissai points out, many of us are actually faster in the small gears. I suspect that many of you holdouts would find that to be the case as well, and I know your knees would appreciate it. It seems like the industry might be catering to out-of-shape people with the huge cassettes, but it helps the fast people too.