Kabuto is strong, but maybe not tail... Actually I just forgot how weak the three tailed beast was, getting his ass beat by two people that were killed and outsmarted by teenagers and seniors. I'd say Kabuto, just because they made base tailed beasts so weak and let Minato lose to one. Kurama may have been significantly stronger than the three tails, but the three tailed beast got bodied, and the two that took him down left without a scratch. Obito doesn't count because he wasn't doing crap while he was pretending to be Toby. Kabuto Low diff.
