LMAO Ness isn't top tier. He is middle at beast.
High:
9 Lucario
10 Donkey Kong
Oh I'm sorry, I didn't know High Tier = Top Tier. Please forgive me and my simple mind. Not all of us can have the powerful observational skills that you possess.
Please, don't insult my intelligence any more than you already have. It's painfully obvious that you haven't played a Ness of any half-decent skill, and I suppose that's understandable, since he's very rare. However, putting words in my mouth that I said he was top tier material (he's not), even when I mentioned him having the potential, at absolute best, to squeak just within the top 10 or just outside the top 10 (still not top tier), is completely laughable.
But I would like to mention that I think he'll probably end up in middle tier, which is fine. I can see him having some potential for more.
And I think everyone else has wrapped up whatever I wanted to say to CHOMPY.
EDIT: After stupidly and inadvertently deleting the long move write up about Samus I wanted to started out with (I only had the side, up, and down B left), I don't feel like typing that out all over again, so I'll just post a synopsis.
TL;DR, Most characters have a claim to fame, whether they can kill well, combo well, camp well, have an extraordinary grab game ect. Even Ganon can lay claim to fame as killing pretty much anyone in about 4 hits, and Link actually has a fairly good camp game. What can Samus do well? Absolutely nothing. She is not fast, cannot combo well due to her extremely floaty mechanics and slow running speed, isn't a particular powerhouse when it comes to racking up damage, and certainly cannot kill to save her life, noting references to extremely nerfed down and forward smashes, dtilt not being as impressive as I first suspected (if it doesn't kill a Game and Watch, one of the lightest characters in the game, on Lylat Cruise, a level not known for it's notoriously high ceiling, at 130%+ after not landing the move at all that stock so no move degeneration was present, that's not a great kill move, especially with the lag afterwards), super missles, nair, and extremely awkward to hit with bair and dairs. Her camp game outside of using the zair for spacing is crap, as most JABS will go through missles, and don't even mention uncharged charge shot, unless you never want to kill with it until 160%, not to mention the lack of being able to do anything against better campers with reflectors (IE most of them). Her grabs suck, and her actual grab animation is probably one of the worst in the game. She has absolutely no priority and while her heaviness makes her hard to kill off the side, her floatiness makes her extremely suceptable to star KOs. She has no approaches whatsoever, so I guess you really do have to rely on that abysmal "campyness" she has to be effectual at all. She's even outclassed as just being a general annoyance. To sum it up, she is really good at absolutely nothing, everything she can possibly do is done much better by numerous ammounts of castmates. I will give you that Captain Falcon is even more helpless than she is, but for every other cast member, I could list at least one redeeming quality about them that makes them worth using above the rest of the cast. I cannot say the same for Samus (and Captain Falcon). She is just that bad. I would have gone much more into detail had I still had my original breakdown, but I'm going to leave it at this.
Also,
tournament rankings,
lousy match ups*, and an extremely shallow metagame don't help either.
*: Yes, that match up chart generally hasn't been very reliable. However, it has gotten much better (but nowhere near perfect) since it's first incarnation. Originally, I had tried to find a more detailed and more reliable page dedicated to Samus' matchups, but they simply don't exist at this moment and time. Looking at the matchups for just Samus on here though, I think it'll be hard to argue against the numerous X marks she has in her row if you just use your own reasoning.