Up smash OoS in melee was relatively ineffective because the opponent would not get stuck in all the hitboxes of the move, or could sdi out of it and hit you before the move even ended. However since the upsmash is from brawl and not melee, plasma up smash OoS when a character that does not have a 1 frame follow up... (shine... *cough*) it is surprisingly effective for punishing unsafe moves on shield. Here is how you do it for the less experienced or less technical samus players out there, when holding shield, just press up on the C stick and control stick at the same time, (control stick 1-3 frames faster to be accurate). This is because samus's jump animation takes 4 frames to get samus airborne, and you need to jump cancel while out of shield but not yet in the air, so 3 frame window really to pull it off, and 4 technically because of the 1 frame built in lag to PM itself. So to keep it simple, just press up on both stick in shield when the opponent hits your shield (hold, 
or , then-->) =
or , then-->) =
