Its hard to say because Benn was never really tested at the top, top level other then the Mclellon fight when he was sensational. That said Abraham is a powerhouse and seems solid. I'd prob go with AA by stoppage or NB on points.
If Benn could go to war, full on, with McClellan, I'm sure he could handle Abraham's small spurts in between periods of hibernating like a tortoise. Having said that, I suppose there is always a chance Benn could be suckered in. Still, I think AA is overrated at the moment, and the KO at the end of the Taylor fight didn't tell the full story. One of the judges had it 103-105 including the point deduction. I think someone will outpoint AA sooner of later. Standing, doing nothing for much of the fight, with your guard around your ears, surely must come up short sooner or later. PS I'm not particularly enamoured with AA so may be a bit bias
Man, Abraham is as basic as a lego set, predictable as feck and well over-rated. Benn would muller him. I think Dirrell will outbox him all night long when they meet, as long as he can keep his chin tucked away he will win by points. Remember, it aint in Germany so Abraham starts the bout the same as every other fighter, not with 6 rounds in the bag before it starts