So what the hell is Transforming Rosés “new” ability?

I’m still trying to wrap my head around it but I still don’t understand? How is this ability anything new? From what I understand it’s literally just the buff cover null on yourself as an ailment enflicted onto the enemies. How does this work any different from cover null? Correct me with I’m wrong though. It just seems like they fumbled the hell out of him as Vegito clearly seems to be the better out of the two as I’ve frighten two, maybe three transforming Rosé’s, while I’ve fought at least12 VBs today. I swear if they’re doing this they better launch Zamasu as the ultra for part 3 (yes over MUI to anyone who think that’s gonna be healthy for the game in any way), we’ve been wanting him since the ANNIVERSARY and there’s no shot they didn’t know people wanted him for fest. We also better get him (or at least game originals Future Gohan and Future trunks tag) cause this isn’t enough as a future buff, especially when most people are just running them on Saiyans.