I love how you continuously avoid other techniques and dont factor in the variables....
Do you honestly think Kisame can make a giant water dome without being hit by Itachi's attacks? Do you honestly think that Kisame can even keep with Itachi to put him in the normal water dome? Itachi is prone to use clones, Kisame closes in for any attack and its GENJUTSU! Kisame's only hope is to use Giant Water Shark Bullet from the start but by that time he will already be under genjutsu.
And I dont care about they were shown to be equal BS, we all know who listened to who in their partnership. Speaking of their partnership, they were only put together because they share similar history (killing of their comrades). Wait before, you can go back and say something about my post, I should correct it. The only reason they were put together was because Kisame requested his partnership due to shared history of killing their own comrades.
Now, back to Kakuzu. Has Kisame ever been shown to use a TBB? Does Kisame have anything to match the destructive power of a TBB? NO HE DOES NOT. Your logic is flawed in your power scale of death you have going on. I guess you'll make anything out of something to support your case.
I really dont know why you even made a thread about this, you could have continued to debate in the other thread, but that fact still stands that Kakuzu still can go toe to toe with Kisame. The fact that you have Kisame beating him by using his best techniques should speak volumes of him. What kind of destructive power can Kisames GWSB do to Kakuzu when his body is already harden?