In that case we'll put the heat as Robinson's kryptonite. I'd say Lamotta was Robinson's kryptonite. I can't see Turpin getting near Robinson at his best, he simply exploited Robinson's inconsistency during the latter stages of his middleweight career.
Taylor/Hopkins is probably the best one I see on here so far. Margarito/Cotto is ridiculous. Margarito is just better. And beat his ass silly.