I gotta go with bo2 jug. Yes it’s only 4 hits. But the health regen is ridiculous. You get his and you instantly get health back. Less than a second. Yes bo3 has 5 hits to down but after you hit it actually does take a little longer to get health back.
I would say bo7 has the best just bc of the turtleshell and hard/durable plates but all that doesn’t matter at round 100 bc of damage scaling