Marvel Studios -- We're Not Afraid of Mayweather ... 'Avengers 2' Ain't Moving

What do killer omnipotent robots, Floyd Mayweather, and Manny Pacquiao have in common?

"The Avengers" are going to kick all of their asses in May ... because Marvel Studios tells TMZ Sports there are no plans to bump the biggest movie of the year ... because of the fight of the century.

We spoke to reps for Marvel who tell us despite the fact that "Avengers: Age Of Ultron" is slated to open on May 1st -- the same weekend as Mayweather vs. Pacquiao -- there are ZERO plans to push the release.

It's an interesting dilemma for Marvel ... do you really want your big blockbuster going up against a global event that's expected to rake in more than $300 million?? Especially on its 1st Saturday?

Despite the competition, the company says it's riding with "Captain America" and "Iron Man" because when we asked if there were any plans to jiggle the schedule the response was simply, "Nope."