He's up there.
He's weaker than Plat, CD, GE and S&W early on (AP).
But he has way more range, while weaker than the four mentioned, GE, CD and S&W wouldnt be able to win because they lack the LS to get past the rain and just get faceplanted, while lacking any long range attack options that isn't just "bubble" or "frog", both of which get rain negged too.
NR is way, way slower, but given the range, he just needs to be quick enough to get the rain out before Josuke or whoever can get close enough, which he 100% can given they all only have peak human or superhuman movement.
Stone Free just kinda loses and so does Tusk Act 1, hard really (Tusk act 1 might also have higher power, but a bullet aint getting past the rain, and johnny only has so many shots).
Plat just walks through the rain and manhandles Jodio tho.
For early on tho. Like late CD mogs him, GER go brrr, GB is just gonna void the rain, etc but at this point in the story he's up there, he ties with most, beats 2 low diff, and only Plat (wow!) just neg diffs him.