Now, I know I'm a Street Fighter fan so I'll look biased and plus the fight apparently ended but I really want to give my input so feel free to disregard my vote.
While Devil Jin surpasses Evil Ryu in so many regards, I mean for one thing: Devil Jin can fly, if Evil Ryu manages to grab him however, that's GG. Evil Ryu is capable of the Raging Demon which is meant to kill opponents instantly.
And thank goodness Ryu vs Asura isn't canon otherwise Evil Ryu would be an absolute stomp on Devil Jin.