Bair, like with a lot of characters, I can feel being really potent against Rosa. She's tall, so it's easier to hit with, and the only thing Rosalina can do if she shields it is grab us and her grabs aren't very lethal, especially in the neutral.
Projectiles, I feel like, have to be used in a completely different way than most matchups. In the fact that, we don't expect them to rack damage up pretty much ever. Rosalina's down B doesn't get rid of the fruit, it only sets it to be grabbed. This can be bad for Rosalina, because we have z-dropping under our belt. What would happen if you z-drop any fruit and Rosa down-b's it? Bair her in the face.
Also remember the fact Rosalina has a recovery that leaves her completely vulnerable. This is something I feel like we need to work on and capitalize on the most, because this could give us an edge in the matchup. Of course, the general strategy against Rosa is killing Luma asap. Unfortunately, our bthrow looks like mario's, but doesn't have the same glorious property of hitting others while swinging. This would be a very easy way to kill Luma for us, but we don't have it. I've found some of the more effective moves to throw luma are moves like dash, ftilt, and possibly dtilt. None of these moves kill Luma in one hit. Imagine luma like a normal fighter; they don't move much when they are hit at low percents. Blinky also kills Luma if you're right near the ledge. Remember, Luma can't shield, so show Rosa your "Luma" and give em a rustle with ol' Blinky. You need 2 hits from Pinky/Clyde to knock Luma off near the edge if he's at full health. ftilt and an orange can kill luma near the edge at full health. an ftilt and even just the last hit of dash attack sends luma off the edge if theyre near the ledge. the last hit of dair also launches luma.
The game turns out to be really, pressuring Rosa near the ledge, and kill Luma. Then we space bairs, and possibly dtilts. z-dropping fruit as well. It all comes down to baiting that GP. We have kill power, but I feel like our ghosts can't help us as efficient as we'd like. I feel like our kills would come from bthrows, bairs or nairs, or even an uair if you can read a landing. Experimenting with the recovery, using side-b to challenge rosa off stage might be good and might be bad. She can GP the pellet, basically not allowing us to use that move until she gets back to the stage, but something to remember is that GP has cooldown. baiting the GP can lead to a more predictable angle of her Up B, and somehow, I'm not entirely sure yet, we can begin to edgeguard her.
