>can't fight worth a damn >literally his "fighting" is standing in one spot doing a gay supermodel pose as he forces some spirit that actually can fight to kick his opponent's ass >has the nerve to act like he's some edgy nonchalant badass when his stand does all the fighting
Before awakening his stand Jotaro was fighting on his own alright. That's why he was respected by other school guys and they consider him to be their senpai and girls loved him.