Kazumaru is right. I don't have DR, but I've heard that it's just an expansion of Tekken 5. They added 3 chars: Lili, Dragunov and Armor King. Their story lines involve other characters, but the initial characters have the same storyline from Tekken 5. Other additions: new stages; new moves....and other modes....and I think they fixed some broken characters/moves.
Yes, as you can see I'm a Tekken fan. I played 3, 4 and 5, all on console. Initially my faved characters were Xiaoyu, Hwoarang and Jin in Tekken 3, but since Tekken 4 Jin got replaced by Kazuya not because of the change in fighting style, but because I find Kazuya a much better character personality wise.
About Lee: his sexuality is not conformed by Namco, so his gayness is purely speculative. I used to like him (upgrated him to Tekken Lord with ease, ah cheapness against the AI is sweet :D), but somehow I stopped using him and now I'm not much good with him. He is nothing like Dante, that's for sure.
So, are there any other Xiaoyu fans here? ^_^ (besides Vampi :))