And I agree with this as well. I also think that proper fit of stack height and reach play a significant part of bike handling. Riding with a frame too large for you can also bugger up handling. People have come to my shop with bikes that are waaay to big for them, such as this one guy who was riding a mid-90s Fuji 60cm frame, when he should have been riding a 56 or even a 54, with 165mm cranks instead of 175. The seat was slammed down as low as it could go, and get couldn't even get flat-footed on one side at a stop without the bike leaning at 45 degrees. He complained about the bike being unruly, and scary on downhills. I transferred all his components and wheels to a nice older 56cm Miyata frame, and ever since then he's been happy as a clam at high tide.