ALright, so even if I accept that it took 100 years to awaken this power, my point still remains. That the Tenseigan, after being awakened, is stronger than the Rennigan, after being awakened. all the Tenseigan's feats we saw were with it's own raw power, while aside from Nagato, all other users of the rennigan [Obito, Sasuke, and Madara] had their powers amplified either through Hashirama's DNA, Rikudo chakra, or the Juubi.
He was shown flying, hence he still has Rikudo chakra.
And you are in fact, incorrect, as Naruto wa sshown with his sage-Kyuubi eyes, so it's BSM.