Just saw this week's Flash and powered up Thinkers opening beat down was impressive with him using all his powers masterfully. So let's say a full powered Damien Darhk joined forces with him and a parallel Davoe with only his Super Chair and original abilities jump universes and instead of a Chutari invasion or fighting Ronan it's these 3.
Thinker(w\absorbed abilities)
Damein Darhk(Full powered)
Davoe(w\Super Chair)
Vs
Avengers 1 and Guardians 1movie
Iron Man
Thor
Hulk
Captain America
Black Widow
Gamora
Quill
Drax
Groot
Rocket