I agree. I watch a lot of this guys videos. He lives in asia (used to be in hawaii) so his ratings are inflated. Hes older but he has good strategy. His shots are just too weak though. Good volleys though. Look how shallow / weak they are hitting the ball. They have decent placement but the putaway power is not there. Looks more like pushing that rallying.
Tall guy in green shirt has a "decent" serve. Im a 4.5 in Florida and my 1st serve averages in 100-110. I know for a fact I would destroy either. Weak 1H backhand on the white shirt. A solid 4.5 would exploit that like crazy. Huge windup on the green shirts forehand is another good target. I think if they face anyone who hits with pace they are done for.
At least in florida these guys get 4.0's no questions asked.
Im a 4.5 and the following video looks like a typical match I would play in a tourny against a 4.5-5.0 player.
http://www.youtube.com/watch?v=GHrDP62RcQU&feature=related
As previosly mentioned it matters where you are from.