Board Thread:Naruto Discussions/@comment-26866422-20160420152937/@comment-25122992-20160421191414

The only problem is that Obito wasn't applying Yin-Yang release until he got the fullest control over Juubi inside. Indicated by the fact that Hiruzen and Tobi, who were damaged by pre-controllable Obito's TSBs, did regenerate in the first place. If they were damaged by the TSBs enhanced with YYR (which gives them the power to nulify ninjutsu), they wouldn't be able to do that, akin to Minato's permanent arm amputation. And no, TSBs and TBBs shouldn't be confused, although they are comparable with each other. The TBBs are just made from regular Bijus' chakra, they didn't have any chakra nature per se. TSBs on the contrary consist of all the 5 chakra natures mould together with the addition of the YYR.