Originally Posted by
ericm979
There's no difference in rider fit between "classic" and "compact" style frames. Only the slope of the top tube is different. You could make two frames that put the rider in the exact same place, one with a level top tube and one with a sloping top tube. There are of course differences in fit between different makes and models of frames but the slope of the top tube does not cause that.
As a crit racer that has owned both, I disagree. The compact frames tend to have a taller head tube versus "standard" geometry. The lines get blurred when the "compact" is really a "semi compact". I think it's tough these days to delineate between the two.