Which Cosmic 4* Champ to Rank 5 ? (Classic Thor vs Ms.Marvel)

CaptainDon

Both are duped.

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ms.marvel :
1) absorb energy damage which helps her to fill power meter fast & once power meter get full she hit like tank
2) she is poison immune champ.

classic thor :
1) awesome damage with 2 armor break stack
2) stun on special

So help me to select which champ ?

Thanks in advance