GSP - No Strength and Conditioning Training?

I found an interesting post today about Georges St. Pierre, in which GSP says that he does not train strength and conditioning for his fights.  My own opinion from knowing and training with martial artists and grapplers for several years, is that GSP is right, but misleading at the same time.  He says that he only lifts weights he make himself look his best, so he is more marketable.  I would agree with this, weights alone will do very little to help you in MMA unless do a ton of reps as well.  GSP says that he does some exercises to build explosive power, which really is the same as lifting weights, but with a variety of excersizes built in.  However, if GSP means that he does not train in conditioning to prevent gassing out in a match, it's complete B.S.  Every fighter I've ever known personally does some type of MMA oriented cardio, such as water exercises, or stairs, or dog laps.