Zemus vs Chaos

[Zeemis]

Terrain
Chaos final area.

Conditions
Zemus can transform into Zeromus.
Chaos has the crystal to get past Zeromus invulnerable state.

In your opinion, how would this battle play out?
Depending on your judgement, it may turn into a two-versus-two battle in the end.

This is a new type of poll I'm starting where It's main antagonist vs main antagonist. One antagonist may side with the other and later down the line may fight another team who sided with each other; or, it may be as simple as a one-versues-one.
You choose! ^_^