I will agree with the sluggish part. But this was also a result of Mayweathers training. Oscar used to have such good footwork and would always be bouncing his way out of trouble, rather than shoulder rolling and all that junk.
Yea,Oscar displayed the brilliant performances when he was in the super light weight and welter weight. The fight against Patrick Charpentier was one of his masterpieces. The combination he threw in the Chavez I was superb. I favor Oscar if those version of him fight Floyd in the super light or welter.