He was at more than full power, kisame absorbed aoba's chakra, samehada's chakra and killer bee's chakra. That is definitely more chakra than kisame + samehada chakra. Kisame fought evenly against bee due to his chakra absorbing techniques. By your logic hashirama has more chakra than the juubi since he could suppress it with ease. I know kisame has bijuu chakra levels but we don't know which bijuu and the point still stands that he had more chakra then than he ever did normally.
Her feats don't top his at all. She had a seal that stores chakra. She could never have done that without the seal. Imagine two cars, car 'A' has a filled 40 liter fuel tank and the other(car 'B') has a filled 60 liter fuel tank. But then car A gets connected to an external tank that has another 40 liters, obviously it would seem that car A has more chakra but does Car A's tank have more chakra than car B? Nope. The same applies to naruto and tsunade. Tsunade has not shown anything impressive without her seal.
RSM is rikudo chakra + natural energy. Senjutsu is simply chakra + natural energy, all natural energy is the same, so what gave naruto more power? Obviously hogoromo's chakra. Otherwise it wouldn't be called RSM.
@bold are you sure?
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