SouthpawHare
Smash Cadet
For those of you who haven't seen the official Prima Strategy Guide for Brawl, they have something interesting about the character section. They give every character a rating in several areas, as well as an overall rating. Since every character fits into an overall rating between 5 and 9, there are effectively 5 different groupings that are similar to tiers by which the guide believes the characters fall.
Keep in mind that this list does not represent my own personal opinion in any way. This is simply the data I have compiled from the guide
Top Tier ( Score of 9 ):
Marth
High Tier ( Score of 8 ):
Captain Falcon
Diddy Kong
Peach
Snake
Toon Link
Wolf
Middle Tier ( Score of 7 ):
Bowser
Falco
Jigglypuff
King Dedede
Link
Lucario
Lucas
Mario
Ness
Pit
Pokémon Trainer
Sheik
Sonic
Zero Suit Samus
Low Tier ( Score of 6 ):
Donkey Kong
Fox
Ganondorf
Ice Climbers
Ike
Luigi
Meta Knight
Mr. Game & Watch
R.O.B.
Samus
Zelda
Bottom Tier ( Score of 5 ):
Kirby
Olimar
Pikachu
Wario
Yoshi
Keep in mind that this list does not represent my own personal opinion in any way. This is simply the data I have compiled from the guide
Top Tier ( Score of 9 ):
Marth
High Tier ( Score of 8 ):
Captain Falcon
Diddy Kong
Peach
Snake
Toon Link
Wolf
Middle Tier ( Score of 7 ):
Bowser
Falco
Jigglypuff
King Dedede
Link
Lucario
Lucas
Mario
Ness
Pit
Pokémon Trainer
Sheik
Sonic
Zero Suit Samus
Low Tier ( Score of 6 ):
Donkey Kong
Fox
Ganondorf
Ice Climbers
Ike
Luigi
Meta Knight
Mr. Game & Watch
R.O.B.
Samus
Zelda
Bottom Tier ( Score of 5 ):
Kirby
Olimar
Pikachu
Wario
Yoshi