Using personas, honestly I think it would be a pretty even fight. In a fistfight, I think the Phantom Thieves would have it down until Chie, who has some actual melee training. The real question boils down to Makoto VS Chie in a fistfight.
Who would each character fight? P4 hero vs p5 hero Yusuke vs ann Chie vs ryuji Morgana vs yukiko Kanji vs yusuke Rise vs futaba Teddie vs makoto Naoto vs Akechi Poor haru
fist fight ide have to give to investigation team because of Chie and Kanji.... Though then they would probably get arrested since they are adults beating up teenagers