Stephen Day wrote:
I wouldn't say that Earth took them down. In most of the stories the Avengers, or X-men, or whoever, only left the planet because Earth was caught in the crossfire of some big war or something like that. The goal has almost always been just to mitigate the damage being down to Earth.
To mitigate or not, it was Earthmen who stopped the million year long Kree-Skrull War.
Operation Galactic Storm ended with Earthmen executing the supreme ruler of the Kree.
Casandra Nova brought the Shi'ar to their knees.
Vulcan ruled the Shi'ar for Pete's sake.
I'd say that's taking 'taking them down' a bit (starting way back in 1965's Fantastic Four #37 when the FF shut down a coup on the Skrull Homeworld (using a Saturn rocket to leave Earth with).