Actually, Unreal came out *after* Quake 2.
Quake 2: December 1997
Unreal: May 1998
One other point...Epic is not making Unreal II. Legend is. The story and ideas behind Unreal II sound rather interesting, actually. It doesn't look like it's going to be "kill monster, find switch, proceed to next level" at all. And I don't think Legend or Epic have been overhyping this game. They say it's going to be cool and list some of its features and tech. Well, duh, what else are they going to do?