Fat Dave has far better stats. Hard to compare when one guy has been injured every 2 seconds compared to a guy who just can't be bothered half the time.
But Leng Haas's been coming back strong. I get a feeling he's been working pretty hard lately and I'm pretty pleased to see that he still has that firey on court attitude. I actually enjoy looking at his on court attitude more than his game to be honest. He's got some real funny body language and emotions (especially after he wins big long points)
But really I feel his forehand is back to his peak this year. The way he spanked the ball during Wimbledon and French Open was much better than he did in Australian Open where he played Nadal.