MooCowofJustice
Too Far Gone
Well, as probably the only person who wants to even try for Etrigan, if he's matched Superman at all or at least punched him to the moon I'd say he's probably stronger than Dante. My knowledge of Dante's strength puts his best feat at stopping one of Savior's punches which I think was 300 tons, which I think is class 30. If Etrigan has ever matched Superman then that would put him at what, class 100?
I dunno what to say about speed. Has Dante ever fought a demon as fast as him? My admittedly limited DMC knowledge says his fastest opponent was probably Vergil. If Etrigan can prove to be faster than Dante's fastest pure demon opponent it could prove to be helpful.
Looking at Wikipedia I notice a few abilities of possible interest, including a healing factor, a master of sorcery which, if it includes TK of some form could render Dante somewhat helpless, and Telepathy which may allow him to read Dante's mind before he even moves. This coupled with precognition could help to even out that speed problem. Extrasensory powers are there, but I'm not sure of what use they might be, or even to what extent any of these powers work.
Also, Wikipedia mentions super speed and magically enhanced claws and fangs, and even energy projections that apparently are not limited to hellfire. It says his strength allows him to stand against people like Superman. While that doesn't necessarily mean he's as strong as Supes, it could put him close. Close could be enough to top Dante in that area.