[quote=@Belwicket]
[@IncredibleBee] I'm posting from the character's point of view. I know he's duel-wielded before. My brother and Kaze have both played through the games. Shivani, on the other hand, knows nothing of the Devil Hunter.
[/quote]

But that also leaves the tactical things you didn't consider. Dual wielding doesn't automatically equate to better swordsmanship.
You also didn't take note of the finer points of Rebellion's qualities, Dante's physical stature and musculature, or any indication as to his what form of martial arts he uses.