i say the famous flash knockdown in the second... good early work first even, 10-8 cotto second...
then cotto would get banged with a left hook and it'd go down hill from there..
dont get me wrong...tito is pretty much a one dimensional fighter comes forward all the time and relies on god given power!!....
and cotto can mix it up to the body and the head and is probably a better 'boxer' but i dont think he could hang with tito's power and he'd get caught in the middle stages and either get stopped of knocked out imo!!
peace