User blog comment:12th Supernova/750 chapters is a LOT/@comment-3425840-20140618154128/@comment-71.13.82.190-20140618180527

After seeing the simplicity of Sabo winning in the Colloseum I think he has a lot of skill prior to having a DF. Yes he has not mastered the fruit he was quite close with Ace to know his fighting style and probably kept close tabs on him. I would expect Sabo to hold his own to a large group of those standing before him, but Fujitora I would expect to put the group at too high a level for just himself. The only thing I can think that may be working in Sabo's favor to fend off the entire group is a view point of Fujitora to not put innocent people in any danger.

The happenings at Marineford could have pushed him to get to the point he is now, which is why he couldn't have done anything more at Marineford.