User blog comment:Eduardovongola/Renji Overpower/@comment-2211792-20131231155627

Kensei, Rose and Renji all have experience from fighting strong enemies (all of them fought Espadas in the past, though none have won). It's just that Mask is so ridiculously broken. He knows his injuries can be healed by James any moment, so he can be as reckless as he wants (e.g. crush his eardrums). And his attacks are too fast to dodge, so the reason Renji has the upper hand right now because he is able to tank them all. He isn't doing much better than Kensei and Rose; he is just lucky enough to have acquired super durability from Squad 0's training. That's his only advantage. If Kensei and Rose could get rid of James, Mask would've gone down easily. Unless Renji succeeds in removing James from equation, his power-up is for nought.