#^&#^&#^&#^&ie was good, but he was nowhere near as good as Duane. Trying to outshine Duane would have been impossible anyway. He still had his moments on the Fillmore East album--he has some of the longer solos on stuff like You Don't Love Me and Whipping Post
Duane himself, though, had a very high opinion of Betts' playing. He'd tell anyone who'd listen that "Brother #^&#^&#^&#^&ie's as good as anyone"