I just finished Unreal 2! The graphics are nice, but as for the story/missions... well, not to say it sucks, but it's like every game has the same story (well, something like that)... and what's more, you don't get to fight a lot of Skraaj this time...
And the weapons are totally different from the UT 2003... I can't see which weapons looks identical to each of it...
But overrall, it's still a nice game to play.