He doesn't want to do big martial arts movies any more. This isn't his last movie, though. It's his last "epic" movie, like Hero and Fist of Legend (probably his best movie), where martial arts is the main focus. He will still be making action movies such as Unleashed and Kiss of the Dragon. He has a movie coming out in 07 called "Rogue", where he is the villain and Jason Statham is the protagonist. It should be really awesome to see those two fight.
The link for the trailer is posted below.
As for who is better, in terms of Chan and Li, it's hard to say. Both are very skilled in their art. The biggest up and coming martial arts star is definately Tony Jaa, star of Ong-Bak and Tom-Yum Goong. I've never seen someone move like he does. Truely incredible.
http://movies.go.com/movies/media?name=Fea...re=&studio=