Returning to fight anyone other then Williams, Cotto, or Margarito wuold show how chicken **** he really was of the other WW's.
His recent PPV buys proves you wrong. Hell, any articles written about him saying a thing or two gains insane attention.
If Pac beats DLH in awesome fashion then Floyd will be interested, doesn't mean he will come out of retirement immediately and make the fight but the interest will be there for sure. That's a fight talked a bout A LOT, especially when Mayweather was #1 P4P with Pac #2. If a fight like this doesn't motivate him then he sure as hell won't come back for nothing and has lost interest 100%.