I already favored Crawford over Pac anyway, even the one who had the WW division in hell. Hearns and Monzon would both stop Crawford. I've never thought Crawford could beat Floyd (at LW, JWW, WW or JMW).
Crawford beats Manny at any point in Manny's career even with the PEDs. Floyd beats Crawford at 135/40....I give Crawford a 50/50 chance at 147/54. Hearns is a tall task but I like Crawfords chances from an IQ standpoint but it would be a 'tall task' as I said. Honestly, I think Crawfords toughest match up is a name you didn't mention and that would be Marvelous Marvin Hagler....I think that would be the fight in which Crawford would really have to grind to find answers for while getting the most damage.