Let's be real for a second. This probably won't end up killing Marvel vs. Capcom. They will coexist.
The only way for MvC to die is for the franchise to kill itself and that won't happen until people get sick of the MCU and that won't happen for another decade or so.
This games combat system seems to be akin towards Naruto: UNS. Might look gorgeous but It's not going to kill anything if combat is incredibly shallow.