This video proves that Ken is useless in Street Fighter
The Pete Holmes Show is hit or miss on its sketches, but one reoccurring skit that was always funny was the Ex-Men. Pete Holmes would play as Professor Xavier and fire some of the X-Men after making fun of how stupid or useless they and their powers were. Pete has progressed from making fun of the X-Men to making fun of Street Fighter characters.
The first character in his Street Fighter Red Tape sketch had Mark-Paul Gosselaar (Zack Morris from Saved by the Bell) acting as Ryu. In the following sketch, Pete goes after Ken and points out how useless he is... and he's absolutely right.