I thought the same. I actually thought his movement resembled Anderson's...not as good, but resembled it. Koz has TONS of potential. His wrestling is superb.. and his striking is getting awesome. Dude will be a force soon enough.
Let's not get carried away.
He's pretty much focused solely on boxing for the last couple of years, however I would not call him a great striker.
I've always been a bit of a Kos fan, ever since his TUF days playing pranks on Leben with Bobby Southworth.
Kos seems to enjoy being a bit of a heel/villian since he's been in the UFC. I did not think he'd dismantle Rumble as he did, but Kos is a supremely confident athlete who has the best wrestling pedigree in all of mma.
That said, I cannot see Josh beating GSP based on my memories of the first fight. When your background is pure wrestling and you are totally out wrestled for the entire fight, it doesn't seem likely that a second time would be any different. For that reason I am glad Hardy is supposed to be next up for St. Pierre.