Him punching the bag is the real indicator. With pads, you can get any random schmuck, and condition them for 30 minutes; everyone looks good hitting pads. But you can't play looking good on a heavy bag, if you can't hit for shit the heavy bag won't lie. If you try to deceive it you're gonna break your hand, or end up with nerve damage. You see guys that will say they're seasoned fighters, and whack a heavy bag with all their might, and have the look of utter shock when they realize the flesh of their knuckles just got shredded off. I think Sam knows his limits on trying to throw volume and fighting off the balls on his feet. He's not gonna jump around, and do great head movement. He's gonna go in, square up and do some dirty rabbit punches, punches to the back the head, headbutts, elbow/shoulder clashes, and finish it up with massive power shots