No , I'm with everyone else that his skills are new. he may have trained in wrestling and jui jitsu , but his skills were not polished and refined. If Matt Hughes reversed a kimura into an armbar, that means GSp has holes in his ground game that Matt Hughes exploited. That was not the case in the third fight. Matt Hughes was totally dominated on the ground and there was no counter he had for anything GSP did. His skills were that polished and clean. I'm with the announcers of this , that his skills are polished and clean (which is why I'm calling them new. I can claim to have wrestling skills since I wrestlied in high school (which was15 years ago) but If you cannot display them and use them when needed , how real is that answer?
http://ballhype.com/video/george_st_pierre_defeats_matt_hughes_at_ufc_79
Totally dominating performance if you have not watched it