You don't need to be mad at anything, the data book states that Yata Mirror alters it's attributes in accordance with these of the attack, so TBB can't even scratch and pass through Itachi's defense.
Totsuka seals everything it pierce, remember Rikudou defeat Juubi thanks to something similar to what Obito did anyway. Lol
Ok, you have databook and manga on your side, HOWEVER KISHI IS HUMAN AS WE ARE SO HE CAN MAKE MISTAKE TO CORRECT THEM LATER... that mean of course he can changes statement made in Databook by him but it can be considered outdated if he ever decide to bring these weapons to manga again, for exmple giving them to Sasuke to use them in fight against Juubi Jinchurki.
Remeber that manga can changes from time to time and contradict previous statment..., simple as that.
Let's say that Earlier Kishi planned to finish Naruto manga with Pein as Final villain..., or close after it, so Kishi decided to give invicible weapons to Itachi to make him invincble etc..
However as story progressed much forward, now Kishi can change his mind and considering how much destructive capabiltity of techniques developed to such high degree then he may contradict previous statement putting limit of these two legendary weapons, to HYPE OBITO AS JUUBI JINCHURKI AND LATE THE SAGE HIMSELF.
SAME AS HE HYPED THESE WEAPONS IN BATTLE AGAINST SASUKE AND OROCHIMARU.
Moreover these weapons are featless, until I don't see Totsuka sealing any tailed beasts/jinchurki or Kishi says so, then I DON'T BELIEVE IT CAN
Same with Yata Mirror, until I don't see Yata tanking Bijuudama from Kurama, not even mentioning Juubi then I won't believe it, why ?
Because If Kishi really want these two weapons to be such invincible and God tools then why don't he bring them and show them via Sasuke(Very good possibilty and opportunity to use) and prove that they can everything and are invincible....
Unless he changed his mind and want to put limit on their weapons then HE WON"T SHOW THEM, because he doesn't want to loose Itachi's fanbase etc., but he STILL CAN PUT LIMITS ON THESE WEAPONS IN FOURTH DATABOOK.
If Kishi proves with manga panels that these weapons can do everything as I said then OK, I admit my loss but else finally wanking these two weapons will stop...
Kishi, please bring these two weapons !