Tszyu looked stronger against some fighters early on. Hatton looked more hungry to me.But not as skilled.
Tszyu got older very fast after meeting the German fighter that nearly won..what was his name Urkal. He had slowed too ,didnt fight for ages fought his friend Jesse james out here and looked slow.(we thought he was giving him a chance and wanted a few rounds under his belt ,but in hindsight maybe not). Hatton young and hungry and on an amazing training routine...

But there was always Cotto like a rock slowly moving forwards taking whatever came with a tight as approach and yet explosive and powerful when he stepped out from behind all of it,very controlled and picked his timing presicley and sat on punches and generated power exactly when it counted. I dont think he's ever looked questionable.