What I am saying was all the results we saw Tbb exploding on Mokuton were shown obliterated. Only time we have seen it "tanked" was when 1.) Hashirama put up Hōbi no Jutsu (every other Mokuton was broken Wood Dragon and Wood Golem). 2)SS (all of it destroyed other then the Budda, which the explosion wasn't focus aim at). This isn't tanking and proves Wood Release can still be damage by TBB.
2nd) I already showed that, even a weaker bomb like Edo, was able to destroy God Gate, which has the same durability as Mokuton. Regardless of how you see it, this bomb will do damage, and enough to make an Mokuton or its foundation/"cornerstone", useless.
I dont think Tobirama can beat his brother, but him alone can push his brother high diff, considering they know each other like brothers suppose to. Adding these other Kages makes this case closed.