I'll try to save a replay of the next time I play with Tipster if you want to see more of that matchup. I tend to use n-air to approach more than gravitational pull against him. If a metal blade is coming followed by a crash bomb, you n-air to grab the metal blade and hit the crash bomb with the tail end of rosa's n-air to cancel it out. Then you can use the metal blade to put more pressure on him at a closer range. Still works similarly if they're coming in the opposite order, but you just n-air the crash bomb with luma and hit the metal blade with the end. You don't have the metal blade in hand in that case, but you still get in closer.
I would only use gravitational pull at a safe distance to force him to approach or to just get yourself in a better position at a far distance or something. Also remember it lasts for a decent amount of time, so it can pull both crash bomb and metal blade in one pull.
As a side note, I think I play a much more aggressive than normal Rosalina, so I'm not sure if my advice would fit well with your play style, but it should be a useful thing to know in the matchup regardless.
Anyways, anyone wanna do bracket 1 ranbats?
