Yes, it's hard to mess up with the B moves in the air. Even the best players make mistakes, it'll happen. Again, it's an exploitable weakness when it comes into play.
"He has the best recovery in the game, but someone might do it wrong and kill themselves."
Player mistakes that are hard to make /= character weaknesses. Assume the highest level of play. Do you think Mew2King would mess up his recovery often enough for you to take advantage of?
Just because he has those kill moves, doesn't mean he has a lot of them. I remember when brawl first came out one of the biggest discussions in the character board was how to kill with him.
Does not matter how many there are, just how consistent they are.
In this case, MK has two of the fastest moves in the game, plus a third that is unpunishable. Unlike Ike, who has tons of AVOIDABLE kill moves, MK has three kill moves...that he can easily hit you with at any place, at any time, in the air and on the ground, and come out so fast that you cannot count on consistently avoiding them.
The moment you hit KO percentages, you're going to die. What a KO percentage is depends on your character and how good your DI is. But you can't count on avoiding getting hit.
The NUMBER of kill moves does not matter. The consistency and how easy they are to land does.
Lastly, yes, his moves ARE weak. Just because he can use them quickly doesn't mean they're powerful.
Except that his speed and range and priority means he can land them rapidly, and they do significant damage. The weak knockback just means he can hit you...AGAIN. Then land a kill move whenever he chooses.
You're thinking on a lower level of play here. Come on. "Your opponent might mess up his B moves" as a character weakness? That's a joke. You have to think at the highest level of play.
At a high level of play, low knockback on some attacks is not a bad thing as it can be followed up, and the amount of kill moves is much less important than the ease of landing the one you have.
Also, "light weight" alone is not that great a factor. Light weight means you die faster, but at the highest level of play there's going to be excellent DI, and the fact that MK has the best recovery in the game means that his light weight does not matter nearly as much. You can't gimp him offstage, while he can gimp everyone else.
Further, light weight means he slips out of combos. Peach has 50-60% combos on Snake. I can't do nearly as much damage off of one hit with MK.
If you believe having only 3 kill moves is a weakness, explain to me how I can exploit it. kthxbai.