Ok, I think this is stomp to one sided, because the Monster can create clones, it would be absurdly difficult to Jack to react to someone with Analitical prediction, flight gives him too much stage control against a ground opponent (he can jump, but then what is he gonna do in the air?) and that accelerated development means that he would quickly adapt
Jack can only win if in the first minute of the fight he hits the core, I literally don´t know the % of that happening and his only advantage is reforcement magic+ the more he cuts, the faster he is doing that
And I don´t know what the Kaiju would do when starting a fight (I want to read the manga so I can´t go and see it because gg spoiler), so it entirely depends of Jack starting , cutting everything to pieces and winning, if not, the Kaiju just adapts and call it a day