I'd favor Curry, but it's not impossible that Vargas could clip him with something serious and put him away mi to late rounds. If Curry had managed to stay focused and away from drugs, I say he stops Vargas late.
The Curry that had those 154 lb. tune-ups before unifying the WW crown against McCrory beats Vargas. The Curry that won a 154 lb. title against Rosi gets beaten
It's sad that Sly hates Curry only because Sly is notoriously homophobic. I could care less that Curry took it up the ass outside the ring. Inside the ring, in his prime, he usually gave it guys up the ass. He'd give it to Vargas as well.