He's just trying to pull the old "I'm too cool to think she's hot" routine, which is fine if he genuinely doesn't like her.
We all know she's not average for the simple fact (because it is a fact) that you don't see women who look like Angelina Jolie just strolling around the street.
Regardless of whether you think she's the hottest woman on Earth or in RJ's case, "not all that"...I will call BS on any man who claims he would turn her down. RJ would I guess because he's taken.
-AC