-_-'

Now this is probably where another 30 page argument about how dante would win and how vincent would win happens...

My answer goes to dante. for those who have never played DMCI- to III here are a few reasons why.

(Well if we're going by FMV accomplishments then it's easilly dante)
dante gets my vote for FMV accomplishments cause most people who have played/completed all the DMC games would know that in FMVs Dante has been shot stapped etc and they have pretty much no affect on him. Now we have not seen much to suggest that vincet can take this sort of thing so we cannot compare which is why dante would automatically win in this aspect.

(For in game stuff)
i'd still have to say dante.With all the stuff he has at his disposal. and it doesn't matter which version of dante we use here now. one thing comes to mind.
Bangle of time
Crono heart(Can't remember exact name)
and
Quicksilver
now all of those have time manipulating abilities so vincent wouldn't stand much of a chance against that.
and if you want to compare it RPG wise then it might be vincent but it would be hard to tell as the only RPG that i have ever seen dante in would be lucifer's call or nocturne for the americans. but due to the stat differences you can't really compare.
but if your going by DoC then probably still dante. for the three already named reasons.