Why does a steeper seat tube angle push a rider forwards? Assume you've got 2 bikes with a totally different frame geometry, but you've got setback, reach, saddle height set, does the frame have any bearing on the comfort and position?
If I have a 52cm bike, a 54cm bike, I've got the saddle setback exactly the same as well as reach, saddle height etc.., would not balance not be off on one of the bikes with one been longer than the other?
Or can one ignore the frame if their reach, saddle height, setback, bar height is all exactly the same?