I recently watched Condit-Ellenberger, this is not an easy fight for Shields.
I disagree. I think this is one of the easiest stylistic matchups for Shields at ww.
Ellenberger has power in his hands but doesn't really set his punches up, he just sort of wings power punches and tries to knock his opponent's block off.
Against Condit, he was mounted 3 times, and had his back taken twice. Condit went for at least 6 subs that I noticed but sacrificed the position to go for them, which is why he lost the mount 3 times, and the back once.
Shields' JJ is far ahead of Condit's, and his top control is miles ahead of Condit.
Ellenberger also showed against Rocha something he showed against Condit, he doesn't react well to being outgrappled, and punched on the bottom. He will eventually go for the sweep, or buck and roll, but he tends to allow himself to be punched repeatedly before going for it.
Against the man Mayhem Miller refers to as "The Blanket" he won't get the sweep, and he won't KO the un-KOable chin of Shields.