Kamui did not prove your interpretation of the DB entry with its feats.
There is no point asking for manga scans because Itachi's life was short lived and we did not get to see Yata much but does that mean its not like what BZ or DB says?
This is your logic.
BZ and DB knows what Yata can do but it didn't get much screen time. Because of that, you discredit BZ and DB statements.
I also won't argue. You're in a STATE OF DENIAL and you can't save people from that kind of thought. If people want to believe Bill Gates is their daddy, you can't help it. But its best you go to an insane asylum.
Lol , you are in denial and say that he is in denial , such an interesting discussion , you are the believer.
Those who believe in something unproved are insane.
Just one exemple:
Temari can blow the universe according to the databook , because you believe in everything the databook says , that means that you take that as a fact.
So now , what would happen for Itachi if Temari blows the universe?
1) Is English your first language?
2) The Bijuu bomb is not a Hydra attack
3) That jutsu did not deflect the bomb
2/Do you think that hydra attack>bijuu bomb associated with the sword that can destroy everything in the universe (you'll agree , because you believe in every words that a villain says) ?

3/Yes it did , read the scan , or do you need the definition of "deflect" and "change trajectory".