Floyd lacks the pop to hurt Hearns from inside when Tommy gets tired, IMO. Hearns JD via lots of jabs, harder to time and counter than usual for Floyd.
Hagler via JD over 15 rounds. Over 12 rounds it's a tossup, depending a lot on which Marvin shows up. If he boxes stupid, he gets outboxed. If he applies the right pressure I don't think Mayweather's power at 160 can stop him on his tracks à la Leonard.
I like the idea of Floyd winning a trilogy against Duran. If Castillo could be a threat to Mayweather at 135 then Duran can rough him up once, then Floyd's adjusments prevail in the following bouts.
Floyd vs Pryor at 140 is very intriguing. Going 12 or 15 rounds would definitely be a factor. I can't really make up my mind on this one.