it's definitely mosely for me. He is the faster and stronger version of oscar really very dangerous for floyd, much like oscar iam still in doubt with mosely's stamina late in the game because in this bout pbf will be in full throttle chicken mode knowing that it's too dangerous for him to get caught up with a heated exchange against a focused mosely because he throws really fast and strong combinations and one or two will very likely land hard to floyd, but if pbf is in full throttle chicken mode he is always ready to back up which is where he is really good at and with that exceptional skill i don't think any amount of speed and power of mosely will matter anyway. he'll all lose it sooner or later at the later rounds.

Mosely, will need to borrow Manny pacquiao's godly endurance and heart if he intends to stop or at least outpoint mayweather in full throttle chicken mode. even then, it's still not a guaranteed win for him but at the very least the probability in getting it is infinitely higher.