Well let me state this again. They can not reproduce the engine the runs the textures or basically anything that run in DX10. They are all closed source built from M$. All they can do is basically hack the games and allow them to run in XP. I can bet you that the games will run and look better in Vista with DX10 than XP.
Reason 1. DX10 is in Vista and not some hacked version.
Reason 2. The games are desinged for XP. Not hacked to run on XP.
Just like the games that are designed for XP run better on XP.
Shocking I know. When people finally realize that a hack job is no substitue for the real thing. Then we can talk. Thinking that some people were able to reverse engineer the whole DX10 system with the textures and all. Sorry. If that was the case they would be able to reverse engineer Vista itself and make a better OS. I dont see that happening anytime soon.