I understand that you don't understand. You already listed 2 options he has. How does anyone get back down against Marth? They just do. Meanwhile, even if Marth does succeed in keeping Luigi above him...infinitely? How are you going to kill him? Reliably? Every time?
How easy is it for Marth to get Luigi into the air? You basically only get him there through grabbing him. Your opponent can always guard against certain openings and force you to beat them in different ways.
What a fabulous argument: "they just do". I can't believe I didn't think of that!
How does anyone get back down against marth? Let's see:
Fox and falco actually don't get back down against marth, I'm citing m2k on that one. M2k can pretty much 0-death every single fox/falco on the planet when he doesn't mess up. Even then, they have better options than luigi: they have more aerial mobility, shines, falco has more priority below him, and because they land on platforms so quickly after being upthrown they can do slide off/tech fastfall shenanigans.
Sheik? She shouldn't unless she lands on a platform that marth can't reach (battlefield top platform). Even then her airdodge fastfall is actually far more legitimate than luigi's, becuase she acutally has falling speed.
Peach? She has a float, and once again, more aerial mobility than luigi.
How do you kill luigi? Eventually get him offstage, at which point he should die. It doesn't matter if you kill the opponent at 200% if they didn't get to move for the last 100%. How do you get him in the air? Grab him; even if they're looking out for that, its bound to happen... multiple times. Watch m2k vs anyone, he gets grabs despite them *knowing* that thats the one thing they don't want to happen. Your moves have lag? They can be dash dance grabbed. It doesn't help that most of luigi's moveset can be CC grabbed fairly easily.
I seriously wouldn't mind a disagreement so much if you guys would actually present a real arugment. Your arguments involve marth players making mistakes, and luigi's miraculously pulling off what I'm going to call the "they just do" from now on. How'd luigi get down? He did the "they just do" it was tight man, no one even knew what happened. I really appreciate you guys just blindly telling us our opinions don't matter cuz we don't main marth, then having lackluster arguments.
Also, max: the other options you listed for getting down I didn't count because I take them for granted. I would hope that if a luigi attacks on the way down, I can put a sword between myself and him. If he double jumps? I put a sword between the two of us and after it whiffs because he jumped, he has no where to go because of ****ty aerial mobility. Aim for a platform? Yeah then you're still above marth, and you haven't succeeded. The only way that really gets you out of pressure is either on BF or DL's top platform. Otherwise landing on a platform just gets you uaired and uptilted more; even if you get down, you're in an awful position that's likely to be reset.
I seriously can't comprehend how you guys try to make legitimate arguments out of "marth messes up" and "you don't main marth". You know what? M2K doesn't main marth either, I bet you don't tell him that. Just because someone doesn't main a character doesn't mean they're not knowledgable, and you are all simply limiting yourself by using such statements rather than valid arugments.