How many fights would have a different outcome had they been set for 15 rounds?

[outspoken]

Margarito-Cotto.. Had they fought in a 15 round era, I guarantee it, Cotto ends up on his knees 10/10..

Leonard-Hearns 2.. I love the hitman but ray always puts it on him late and he would have lost again..

Lol Cotto vs Margarito was mainly the reason I thought about this thread. I also feel like a healthy (eye) margarito would have Cottos number in a 15 rounder. I'm not a margo fan but that's what I believe.