Umm I'm a chuck fan but come on now, get real lol. When was the last time we saw Chuck take someone down and GnP. I'm not saying he is incapable of doing it but Chuck has stated many times that why play to someone elses game. In fact here is an old piece from an interview with Chuck...
"Chuck Liddell: I am a purple belt, but I have adapted and taken what I need out of Jiu-Jitsu in order to make things work for my style of fighting. Why fight someone else's fight? If you're a stand-up guy and you get taken down by a Jiu-Jitsu guy, get back up. Don't fight his fight, just get back up... so that's what I do. My Jiu-Jitsu serves me well, but I won't be trying to submit him."