15 is the ultimate test and if you can master that then you may consider yourself TBE. Floyd is not TBE as he never gone the full distance to even prove he is the best. All the true greats did 15 rounds. 12 rounds is enough time to spoil and clinch to run down the clock. 15 rounds would show who is who. It's only 45 minutes, but 36 minutes, is diluting it down to something silly.