People like Ryu and Rose being able to bring down a nuke tanker like Bison is more of a showing of strengh / power for them rather than a display of weakness on Bison's part.
The same goes (as an example) for Trunks being able to cut Freeza - a guy capable of withstanding planetary explosion - like butter. In no way does it mean someone like Dante or lets say Ichigo from Bleach or Zoro from One Piece could do the same to Freeza, not a chance (except for Yamato due to its dimension cutting hax, maybe).
Like I said the only DMC games I have played are 1 and 4, and I've also watched the DMC anime. The novels are a unknown for me and I wouldn't be able to tell what Dante's feats are in DMC 2 and 3 other than what I've heard from others. However if the info I have got from sources such as the OBD wiki regarding Dante's overall stats are correct, unless something really extraordinary is missing, the simple idea of a unarmed Dante posing a threat to Akuma sounds ludicrous for me.
And since the main subject in here has turned out to be the durability of the Street Fighter cast I think its time to bring in some more showings to the table so hopefully the downplaying in this thread may come to an end.
Akuma in his 3rd Strike ending stays at the botton of the ocean with several tons of pressure upon him unaffected. Should as well note that he tore up the boat upon collision with his body (while performing a hurricane kick) which is also a display of durability.
YouTube video
Bison in his weakest incarnation withstood a Kikosho from Chun-Li powerful enough to decimate a city block point-blank range. And apparently at Naruto Forums Chun's Kikosho seems to have been calculated as high as multi-city block level (seen it in a M. Bison vs. Holy Shonen Trinity thread).
The scene in question can be seen at 0:51 min in the video bellow.
YouTube video
It should be noted also that Chun is a mid tier in the SF universe, most likely bellow the likes of Ryu and Sagat, and probably nowhere near resembling a threat to the top dogs of the SF world.
The next case may not be of much relevance for the thread but still a nice durability showing for a mid-tier in Street Fighter so I'll post it either way. At 26:20 min in the next video Guile tanked an attack from Juri that destroyed a jet fighter as a side-effect.
YouTube video
The next video shows Akuma and Gouken fighting comfortably inside of a volcano as depicted in the opening of SF IV, already mentioned in the thread. Whether this fight is the one they had prior to the events of the Alpha series or the one at the end of SF IV I'm not sure.
YouTube video
And now with Oni being confirmed as canon to Street Fighter's storyline there's no reason to disconsider the next showing, i.e Akuma in his Oni form causing a volcano to erupt and then casually tanking the eruption.
YouTube video
All in all Dante is likely to clear the gauntlet as long as he gets his hax stuff such as Yamato, but if for some reason those are banned unless Dante has demonstrated firepower beyond city block busting (as is the case for Chun-Li's Kikosho) or at least the ability to hurt beings evidenced to have the durability to tank that kind of force without the use of hax I'm afraid he wouldn't be able to pose much of a threat to the big wigs of the SF world, and even less so to that Doomsday-ish version of Akuma seeing how it laughed off a ****ing volcano exploding on his face.