Minato and tobirama win this but it will be great battle. I assume minato has BM in this battle. He can overpower itachi's susano with BM and give tobirama a cloak too. That will make it easy for team ftg. In fact the combos these too can pull together are way too dangerous for opponents.
Image tobirama is about to get knocked out by an opponent and minato swaps with him with a rasengan in his hand. Who could react to that.
EDIT: What sealing techs does Minato and Tobirama have?
Isn't Minato highly experienced with Fuinjutsu? I believe Hakke no Fuin Shiki, Shiki Fujin and Keiyaku Fuin are fuinjutsu that have been shown to be possessed by Minato.