X Men Vs Rock Titan

Colossus
Nightcrawler
Beast
Bone claw wolverine
Rogue

Vs

Rock Titan (Aot)

Overkill in the X-Men's favor.

Rogue solos.

The titans get murked by peak humans on a daily basis. Really, what chance do they have against superhumans and experienced ones at that?

Colossus picks him up by the ankle and uses him as a melee weapon against oyher titans.

If the X-men were in the AoT universe, they'd get exterminated.