Vision & Moonstone VS Martian Manhunter

Was having this conversation a little while ago and thought Martian Manhunter could beat the duo no matter the circumstance but admittedly I don't know much on vision beyond the basics and some comics so out of curiously iv brought this here.

Round 1; team gets one day prep.

Round 2; random encounter.
Fight takes place in Gotham city, who wins and why?

VS

Yeaaaah, J'onn is going to curb them.

Though, the prep scenario is interesting.

Originally posted by JakeTheBank
Yeaaaah, J'onn is going to curb them.

Though, the prep scenario is interesting.

Yeah I think the prep fight is more interesting overall and am curious to opinions on that.