Thread:Spencerz/@comment-2054358-20130817182301/@comment-4651179-20131022190325

One of the reasons why those Earth-Crossovers have pages is because Marvel gave them numbers, as you can see, they have official numeration. Also it can be taken to account those Earth-Crossovers aren't the main DC universes, while the universe where Mission Marvel took place was Phineas & Ferb's own and main universe.

And Earth-TRN177 is not a reality for Capcom, but for the Marvel Universe which collided with Capcom's. In all three Marvel vs. Capcom games, the heroes from both companies didn't co-exist until each game, as it can be seen easily in MvC3's sub-title: "Fate of Two Worlds".

I hope that helped, I yield the floor back to Spencerz.