i'm going to assume this a free-for-all.
DmC Dante could seriously wreck face with the arbiter, but even dmc1 Dante could probably roll away in between hits.
DmC Dante can, of course, parry, but it's not like any other Dante is only capable of offense and parrying forever will probably tire him out rather than accomplish anything (i doubt something as powerful and as skilled as Dante would be stunned by a parry, he relies on skill, so if nothing else, he can just stand back and shoot and get himself knocked out of range if actually parried)
DmC Dante has Aquila, but pulling three Dante's towards you at the same time is slightly suicidal, only slightly.
DmC Dante also has eryx, but all the Dante's have a weapon like that, so you'd probably end up with a fist-fight at one point.
dmc1 Dante would win in a free-for-all because he has the power of his grand daddy.
in a one 1v1 scenario, i'd say:
dmc3 Dante and DmC Dante, i don't know who would win, DmC Dante can DT, but it was stated that he was meant to be on equal power level to classic Dante, so dmc3 Dante DT would most likely cancel it out.
DmC Dante can DT less often as well, but the time his bar is fully charged, dmc3 Dante would be fully charged 3 times over easily, probably DmC Dante couldn't DT for longer then a few seconds, dmc3 Dante would most likely be able to DT for longer at most times, so DT is useless, honestly i don't know who would win, i'm leaning to dmc3 though because DmC Dante feels more sloppy, especially with rebellion, that little stumble animation would easily cost him a limb or four. They both fire ebony and ivory at similar speed, and DMC logic suggests that shooting bullets together cancels it out, i think classic may shoot slightly faster, but i'm not sure, either way the difference is small and they can both easily get away.
tough call, i have to say i have no honest idea.
for classic Dante, dmc1 owns everything cos spardaaaa power, without the sword he is second best.
dmc3 is the weakest classic.
dmc4 is the mid i dmc1 has sparda power and strongest if he doesn't.
so then DmC Dante remains.
dmc1 Dante VS DmC Dante, i think dmc1 Dante, in every devil may cry game Dante's powers massively grow, in dmc3 Dante is one weak-ass who fights a much weaker version of sparda, dmc1 Dante fights some the most powerful demons of the highest rank and even the Dude whose powers rivaled mundus ( only able to fight mundus with the sparda mode though)
Same DT logic applies, DmC has way more speed on his side, but dmc1 has some serious powerhouse if DT'd, such as powerful spinning vortex in which he cant be hurt (have fun dodging!) and a fire AOE nuke (that DmC dante would probably dodge)
he can throw his sword to distract DmC Dante while still fighting with his fists.
his growth in demonic powerful would greatly increases Dante's Damage and reduce DmC Dante's damage (that's dmc logic, where how much a demon is hurt by another demon correlates to that demons power, no word on DmC, i'm going to follow DMC logic because it's the closest i can get to rules)
again, tough fight, with the dmc3 moveset he'd kick ass, but he doesn't so yay, and stuff, and stuff, ebony and ivory probably fire slightly slower so in a gunfight, he has a slight disadvantage, but he probably would barely feel a bullet since less demonic power is infused into it then a melee weapon of some kind.
no idea, i'm leaning to DmC Dante's speed, but the vortex and easily regen'd DT make me unsure.
DMC 4 has all the mentioned advantage of both dmc3 and dmc1, and then some more, i say ownage imminent due to increased speed and a ridiculous power level.