You’re looking at this the wrong way.
Tokido- A Sakura, Bison, Blanka
Daigo- C Guile, Chun-li, Sagat
Ino- K Cammy, Blanka, Sagat
Aoijiru- A Guile, Bison, Todo
Version- A Maki, Joe, Chun-li
Dan- C Ryu, Ken, Sagat
Morikawa- A Hibiki, Blanka, Bison
Otaku- K Hibiki, Kyo, Rock.
Character totals-
A Sakura- 2
A Bison- 3
A Blanka- 2
K Blanka- 1
C Sagat- 3
K Cammy- 1
C Guile- 1
A Guile- 1
C Chun-li- 1
A Chun-li- 1
A Hibiki- 1
K Hibiki- 1
C Ken- 1
K Kyo- 1
K Rock- 1
C Ryu- 1
A Todo- 1
A Maki- 1
A Joe- 1
Team BAS members (ie. A Sakura, Bison, Blanka) made up a total of 7/24, or about 29% of the full count of characters.
Specifically, A Sakura was 1/12 of the roster, or about 8%.
A Bison was 1/8, or 12.5%.
A Blanka was also 1/12, or about 8%.
C Sagat was 1/8 or 12.5%
In short, almost 3/4 of the characters used were NOT Team BAS characters (about 71%, actually). Considering they beat who knows how many people to even qualify for SBO in the first place, AND beat more people to get into the final 8, there’s no reason to assume that any of them couldn’t have taken the finals. Tokido got lucky in all his matches and won. Morikawa should have beaten him, Ino missed some chances, and Daigo just screwed up, too.
Check out this year’s results- the other team got lucky and beat Tokido’s team, which was hella buff (Ohnuki, Ino, and Tokido).