Is Seth Mitchell a promising prospect?

I have watched 2 fights of Seth Mitchell, an undefeated heavyweight who was once a football player.Hes 29 years old. Hes big and weighs over 240 pounds, seems to be in great shape for a modern HW and has speed and power. I think he has 22 fights right now. He seems to be the best US prospect at HW right now, although thats not verry difficult lol. Im shure he would knock Wilder out. I think Wilder is to fragile. Wilder is as tall as Wladimir but only weighs 220 pounds! And he was already dropped by a bum.