SRL had no trouble with dealing with defensive fighters, see the Wilfred Benitez fight. Or even when Floyd Mayweather Sr tried the shoulder roll vs SRL and failed to be effective.

Roberto Duran at 135 would be too much for Floyd Mayweather Jr, if Floyd Mayweather Jr struggled with JLC then i don't see him beating Roberto Duran.

I think people forget that the 2nd fight with JLC, wasn't a blowout either one of the biggest myths i've seen. The fight was pretty even until the last 2 rounds Floyd Mayweather Jr only won 7-5 max.