Sure Ken and Akuma are. Just look at their arsonal. There are very few unique moves that Ryu/Ken/Akuma have.
*note a move that's preformed the same way but has different color/animation is a clone. :biggrin:

And the fact that Ken (a caucasian) stands about eye to eye with Ryu (an oriental) is a dead give away :biggrin:

James Carter would point that out to you easily :biggrin: