To be honest I think Zetsumoto wins but not because he was the better debater but I think his team is most likely to win simply because of too many attacks like the fire, electricity (which Mr. Ingenuity proved that he has resistance to but not enough IMO) and Vibe shocks while also having TP and precog.
That wasn't the debate Zets argued that the elemental gun would one shot, not that the entire team together could take Legion. Also as the only thing it could harm is the symbiote. Archangel's body on the other hand is immune (by this scenario's standards).
But as the random omnipotent being your word is law so, so long and thanks for all the fish.
Fire attacks were brought up (it was the element used in all of the long distance shot scans). The team was relevant, everyone played a part, I had vibe's homing blast as a follow up attack, Alex provided TP, Banshee provided precog, everything came together to ensure you were 100% down for the count.