Obv cause a faster ronin will beat another ronin team aswell as any other team faster kushina faster 6 path etc cause there stacker so they'l do more damage the meta is with buffs if you could cc a non imune ninja like a kazuzu ronin and a kushina if you do run a kushina yourself like itachi edo pos 2 is important like if you have a kakuzu or a ronin wanna cc the pos one or 5kagMad like a mirror match shark bomb faster win's always or they just don't have the support or damage so that's why stack is the way :p