I completely agree. I've always said that if you really want to prove the validity of a subtle postulate, take the subtely out of the equation. 26" vs 700C? Hard to tell which is the faster wheel... 700C vs 20"? I've done it, I know what the answer is but it isn't relevant to my main point. 170mm cranks vs 165? Sheesh, who knows. 175mm cranks vs 130mm... hmmmm, if you don't feel a difference you might be dead. 15mph average commute speed vs 12mph... meh... how about 5mph or even 2mph... walking speed. Now you might be talking. I for one am still way too sweaty at 10mph for it to make any real difference. I will do some experimentation with a 5 mph average speed and get back to this thread.

H