Jones would have beaten both of them comfortably.

He might have have a more difficult time with Benn due to Nigel's aggression & speed, but I think he would have prevailed via late stoppage.

Jones isn't knocking out Eubank, but Chris just didn't do enough in fights sometimes & there's is no way he'd be able to do all that glove touching, nostril flaring nonsense that he liked; Jones would have bounced an eight punch combo off his head before he finished doing it.