I think Roach will see it as his greatest chess match, and I think another aspect is that Manny will be okay at reaching Floyd and getting back out.. He kind of commits forward, but slips and gets his head down and out to keep away from Floyd.. As long as he has different angles and isn't predictable, which I don't think Pac is, Floyd will at the absolute minimum, have trouble with him...
Not to say he won't win and look good doing it, but I don't see it being easy and I don't see Pac taking anything to risky to get himself knocked out.. Roach will have a good plan of attack and defence, and I think Floyd and Roach will be prepared as if it is the biggest fight of Manny's career.. Because it will be... And if he's intelligent and doesn't leave anything in the ring, Floyd will not have an easy time at all...