Which team wins in a battle to the death?
Team B wins easily. The combination play of Diarmuid, Kakyoin and Yamuraiha is too strong for any of Team A to compete with.
Zoro literally could kill almost all the entire right team with a Black Rope Dragon Twister.
then you have a guy who turns into a Titan that regens everything and can only be killed if cut in a specific spot by something of absurd strength and durability.
Akame have the strongest plot armor of all and can one shot every living thing, so I go for team B. Though Chrollo, the asspull man is on team A, it would be a good fight to see.