This is a mismatch pure and simple, Marvel has way too many fighters who could kill most of capcom in one shot. Galactus, Tyrant, Silver Surfer, The Celestials, Ego, Odin, Franklin Richards and the like could pretty much blow up the Earth at any given point killing everyone who needs an atmosphere to live. The rest of Capcom's bunch like Pyron, Jedah and possibly Sparda Dante get the distinct pleasure of going it alone against the abstracts such as, The Living Tribunal, Infinity, Eternity, Entropy, Death, The In-Betweener, Master Order and Lord Chaos. Hell we could even bring pre-retcon Beyonder. Capcom loses, Marvels got too many universe killers on their side.