Also what evidence is there to say that the Tailed Beasts during the war arc are massively above there normal power?
Like M3X said, their feats pre-war arc are really bad compared to what they achieved in the war arc.
- Shukaku : Was damaged and kept up with by Gamabunta.
Yuugito/Matatabi : Kakuzu managed to block a paw strike, ableit barely, and survived. Hidan defeated her with his Jashin ritual. Keep in mind that for that "hax" to work he ACTUALLY needs to stab her and draw blood first, so he definitely scales for damaging her.
In the war arc: Has a 6-C feat
- Isobu : Deidara took him out with some of his weaker bombs. He couldn't have even used C3 because the surrounding area was completely intact.
In the war arc : Has a 6-C feat, and managed to shake BM Naruto a bit with his spinny move.
- Roshi/Son Goku : Taken out by base Kisame, and it really didn't look all that difficult.
In the war arc: Even Lava mode Roshi kept up with and burned KCM Naruto, with his V2 and BM states outright overpowering him.
They simply have better feats in the war arc, so unless we treat EVERYTHING before the war as an outlier, we have to differentiate between their pre and post war arc stats.
Admittedly though, there IS one flaw with this. In their fight against Revived Sage Madara, they didn't have Obito's amp, yet they were capable of contending with a much stronger Madara and even harming him physically on a couple of occasions.
This could be an issue unless we assume that Obito's amp was permanent.
Another wild card is Shukaku. He didn't receive a Six Paths amp, so his power level SHOULD be uniform throughout the series, but then we have Gamabunta tanking his attacks and countering with his own, and even damaging him with his sword. This means that Gamabunta scales, which means that Pain and Manda scale. It does create an issue for our current assumptions, so I was wondering what you guys think we should do about that.