Sonicfox's list isn't a tier list, nor are any lists that have circulated since the games release. It's an assumption of character placements based on ideas and theory with no numerical matchup testing what so ever.
A tier list is made by focusing on matchups for each character and to do this you need x amount of people who are highly skilled with y character and the game in general to play sets with other players of the same level that play different characters. After a large amount of sets, you gather your findings on each character and decide whether the matchup is 5-5, 4-6, 6-4, etc. You do this for every match that character has. This needs to be done with every character in the game. You take the matchup numbers for a specific character and add them up, then you do it for the rest of the cast. After that you place them in ascending order. There is your tier list. This can take months to years to do. Contemporary fighting game players don't have patience and want lists now for numerous reasons.
I don't care how good you are at a game, one person alone can not make a proper tier list in a months time. Hell, even if there was help it's still too early. Never base your opinion of a character off of "tier lists" that are premature. I'm one of the people on here who thinks Noob is strong. I came to this conclusion by playing the game. Good character is good.