Should floyd fight manny in a cacthweight fight?

i honestly think manny is going to have to move up in weight to face him that way. personally im not a fan of these catchweight fights and if someone if manny and his fans really want to be the one to hand mayweather his first loss, manny will have to step up to his weight but it seems complicated. marquez was at a huge disadvantage when he faced mayweather. i honestly think pacquiao has no chance if he moves up in weight to meet mayweather. mayweathers skills are just too superior rightnow. he just doesnt have fast hands, he has fast head movement,foot movement,body movement, manny just seems to have fast hands and no good head movement, he gets hit too much. as i said before,pacquiao is hittable, floyd isnt. cotto let pacquiao impose himself on him, he made the mistake of showing weakness, marquez and morales had success with pacquiao cuz they showed no fear and let pacquiao know they can trade shots as well. in anycase, if pacquiao and mayweather fight i have mayweather by unanimous decision.. what do you guys think