Many MMA fighters are already catching their breath upon reaching the third and final 3-minute round. You can't survive boxing with that fighting condition.
Yeah, many of them will underestimate the amount of rounds in boxing, plus the pacing is all different. I don't think Silva will find that a problem though, he's already been the distance with a decent fighter. So, he should know how to pace himself. In fact, you could argue that Jake hasn't had the experience on a fight night going the distance yet, and how's that going to effect him?
Although, Jake will probably be fine, I'm sure he's done the rounds in sparring. I'd probably put money on Jake to stop Silva since the value is there, and I know that Silva lives on the edge in terms of defense. I won't be since I'm away, but for anyone putting a bet on it might be worth considering.