Let me grace the Smash populace with my thoughts on the tier list.
Perhaps one day everyone will understand.
S Tier: Meta Knight, Snake, Diddy, Falco, Wario
A Tier: Marth, IC, Dedede, Pikachu
B Tier: Olimar, ZSS, Lucario/Rob/Toon Link, Peach, DK
C Tier: Pit, G&W, Wolf
D Tier: Sheik & Zelda, Sonic, PT, Fox, Kirby, Luigi, Bowser, Yoshi
E Tier: Ness, Mario, Lucas, Ike
F Tier: Falcon, Jigglypuff, Samus, Link
G[anondorf] Tier: Ganondorf
A few notes:
Marth- perhaps in S Tier. I think it can be justified either way. It depends how you view his matchups with... very plainly put, the top tier characters. For example, his matchup with MK has been argued intelligently anywhere from 40:60 to 35:65. For Snake- 55:45 to 40:60 is the vibe I'm getting. Etc.
Olimar- I feel he's too inconsistent to be a huge threat at national tournaments. One slip up from a bad desynch... you manage to pluck the wrong pikmin at bad times... the tragedy that is his recovery... and more. He may be an A Tier character. It can go either way, imo.
Donkey Kong- I feel his placement in my list can justified assuming the infinite is BANNED. I'm not getting into a debate about that topic.
Pit- Secretly, I think he's a really good character... He may move to B Tier later on. At the moment though, no.
G&W- Horrible matchups with the most common tournament characters? =will never get past regionals.
PT- I'm bias.
Yoshi, Ness, and Mario- I'm not too sure about them. ;/
Ike- I kept bumping him lower and lower... He doesn't seem like a bottom 6 character to me, but the others just seem... better. *expression of sadness*
Overall- D, E, and the second half of B Tier was a little fuzzy to me. C and D Tier could be lumped together. I felt a separation was necessary though.