2013-14 Ashwin, not 2016-17. The myth that Yasir = Ashwin will soon be busted after the Yasir > Ashwin myth.
Ashwin is no Warne/Muralitharan but he is becoming a complete spinner now, and is mastering the art of deceiving the batsman in flight, something Yasir lacks at the moment. He is also incapable of bowling dry - on course to scoring his third double-hundred in 7 games, which is awful. Ashwin has never been so expensive so consistently.
So far in all the countries where both have bowled, Yasir has been better in England only and that doesn't take into account the level Ashwin is at now. He has taken his bowling to the next level in the last year or so.
Anyhow, only a matter of time. India have overseas tours coming up from 2018 onwards.