I think George was just being tentative. Richy had no chance in that fight, and everyone knew it, including himself. So he just came out recklass and swinging, which makes him very unpredictable. So george just waited until he saw an opening, then took him down without risking his neck and got the sub.
He didn't look impressive, but he did play that one smart.
Demian Maia may be the Fred Astaire of jiu-jitsu, but itís too bad Silva is the Gene Kelly of kicking everyoneís ass.