Scenario 1: Obito has rinnegan and ms(kamui) and minato has only KCM
Scenario 2: Obito has rinnegan and ms(kamui) and minato has BM
Scenario 3: Obito has rinnegan and ms kamui + 6 paths(jinchuurikis) and lets assume minato has perfect Sm
and he fused it with his Bm