Corbett is not remotely on Byrds level of technical boxing skills...only extreme punchers or Byrd who was a exceptional at everything but power beat Tua.Based on a handful of fights before Sullivan vs guys who look like they stumbled out of a saloon,i would say your argument is extremely weak in the notion that 6'1 190 pound skinny Corbett would somehow stop the 235 pound 5'10 tank..