josuke and jotaro should be FTL [not sure about gio or jolyne, though. it's been a long time since I finished the manga] from what I know
FTL in reactions only, and the same goes for their Stands. There's a 90 meter distance between them and the Kings (based on standard starting conditions). And seeing as how the Jojos lack continental power or the attack range to harm the Kings, whereas the same cannot be said for the other side, they're really not going to land a hit. Course I haven't read past Stone Ocean, so I don't know what the last two Jojos can do.
yeah I know the FHK are continental level, but don't forget the joestars are haxxed [exculding joseph and jonathan these two are non factor here].
Also, Attacking at FTL speeds contributes so much to the damage they can do [ think of the Flash's IMP (Correct me If I'm wrong)]. do you see where I'm coming from?
The Stands may be hax, but it doesn't matter if they don't have their hax abilities don't have sufficient range. Nothing's stopping Toriko from kicking up something that can slice their Stands and themselves into pieces from kilometers away. Attacking at FTL speed doesn't give the Stands' punches anything substantially high. Human Stand users have survived a barrage of Star Platinum's FTL punches straight-on.
Also jotaro with Star Platinum:The World can stop time consecutively, So with that the joestars could pull off a win.
He can spam it, but there's obviously still gonna be an interval before he uses it again. He's not Dio. And the best a time-stop barrage can do is country level damage. At best, that would bruise sani maybe, whereas everyone else just laughs it off. Furthermore, nobody else on Jotaro's team would even be able to help him while in a timestop. It's also a particularly bad idea to get within melee range of a bunch of guys who can not only tear apart your Stand with their bare hands but also yourself. Especially since Coco can coat himself in poison - meaning Star Platinum's gonna disintegrate if it touches him, and Sani can wire the battlefield with millions of his hair.