I like both guys. I have no problem at all with how Condit fought against Diaz, if you can 'game plan' an opponents weakness and get a win, well, that's the whole damn point of martial arts.
That said, unless GSP's knee becomes an issue, Condit is not going to 'game plan' GSP ... not going to happen. Matter of fact Condit may be beaten already due to not having a game plan for GSP he can have any confidence in.
As for GSP's 'questionable chin', a lot of good fighters have found themselves unable to 'ask' that question once they got in the ring with GSP ... but, that's Condit's only chance really, so if he has any plan at all it is probably to go for broke every time the fight is taken to its feet, and being prepared to spend a lot of time on his back