Jack's AI is brutal, almost every time when I go against him and pull a really good hit, he rebounds the f**k out of it and completely turns the tide against me.
I totally recall someone playing like your playstyle that used jack way back to almost years ago in 2007. The name of the account was called SeventhSun or TheSeventhSun, I'm not 100% sure. But the channel and the entire video got token down. That person also did one credit runs too. I'm just a bit sadden to learn that the videos are gone, and I can no longer study the technique the person used, because they played so fast and so precise. Wish I could be that good!
the characters ai differs depending on the mode. jack is so annoying to fight on story mode but on win contest hes pretty easy. just play aggressive and he will go down quik