I know almost nothing about RWBY, so I’ll be basing this off of what tiny amount of info I know about them.

R1: Josuke’s pretty smart and I doubt Yang could stand up to a DORARARARA to the face, and his restoration ability would help out a lot. Josuke 7/10

R2: I see a lot of people low balling Kakyoin here, but he’s really smart and would use emerald splash as a distraction while he uses Hierophant’s appendages to make a barrier around Blake, then he’ll use the 20 meter Emeraldo Sprashu for the kill. Kakyoin 6/10

R3: Jonathan isn’t fast enough to keep up with her, so he probably loses. His hamon isn’t really advanced enough to win and he doesn’t have

R4: Giorno and Bruno easily win, there aren’t many scenarios where Emerald and Mercury don’t get MUDA MUDA MUDA’d or ARIARIARI’d into paste. 9/10 for the gangstars.

R5: DIO just MUDA’s her out of existence.

R6: Joeseph: Next you’ll say: “I’ll slice you in half you little shit.”

Weiss: I’ll slice you in half you little sh-NANI?

Joseph: Didn’t you notice the string barrier I made around you while I was running away?

Weiss: IMPOSSIBLE!

Joseph: HAMON OVERDRIVE

R7: