I wouldn't say so. Gravity ball goes through projectiles, and if you can get a trade with subzero then you have a free combo. Keep in mind, after dash cancelling a dagger, skarlet cannot block for a few frames, which means that even your opponent cancels the dagger to avoid your ice ball or grav ball, they can't block it and are left with the option of jumping, leaving time for both a 22 string with subzero, and a dash with reptile. Not that I'm disagreeing, I'm sure getting that projectile out in the first place will be an issue.