yitayningwut, it’s hard to figure out how Kabbalah is being compared to, lihavdil, A”Z and, even more difficult to imagine how you can intellectually question “why don’t we all convert?”.
First of all, a navi is not necessarily believed after he does some “magic tricks”. In fact, the Torah warns expressly against such belief when the navi deviates from the Torah.
As well, Kabbalah, properly learned and understood, does not negate any part of the Torah.
Second, and more important, there is no intellectually honest way you can cram Christianity into, lihavdil, our holy Torah.
There are simply no reasonable answers to the numerous and multi-pronged problems with Christian use of our Torah to support their faith. It’s simply impossible and a non-starter.
You can erroneously find support for anything if you are biased and/or pursuing an agenda, if that’s your goal. But, again, it’s a non-starter, no matter how great a gemara-kup you think you have, PROVIDED you are being intellectually honest.