Yes, but Denjiro also wasn't fighting at anywhere near his top level, so it's fair to say their fight would look a lot different now. Still, I doubt Denjiro would end up weaker than Ashura who was already on Jack's level. With CoA Lv 3, I'd find it hard to believe Zoro could defeat him even with Enma (though who knows with Oda's halfassed powerups).