Jerry and Devon BOTH lighter than usual against Levan. WHY?

Why lighter against Levan (of all people). Beforehand its "i gotta be bigger than ever" and then they show up even lighter than usual. First Devon, now Jerry. Whats up with that ?? Devon said he cant get bigger. But we know he can. Now he is bigger again! Jerry said he went for more endurance. Wtf. Is it a mental thing? Is it the fact that this is their biggest match? Do they overtrain?