Which Champed 5*s would you attack in PVP?

mpqr7

My current best characters are lv 435 OML and lv 420 PHX.

Right now, if I see a team in PVP that has one championed 5* and one championed 4*, I will attack them if that championed 5* is an OML, PHX or SS.

I'm curious, based on your current level and power, are their other championed 5*s you would attack in PVP? I'm terrified to take on most championed 5*s, because I don't want to be obliterated. Perhaps I'm being overly cautious?

For instance, Dr. Strange does a ton of dmg with his passive Yellow, but if I do OML strikes only, that might be enough to take him out and absorb the damage?

Maybe I could take out Black Widow if I denied her colors long enough?