http://gamersmafia.com/entrevistas/show/176

A Spanish-language site has posted an interview with Dave Ewing, lead level designer at Epic Games. They have asked some good competition-related questions.

Dave: The feel of the physics, speed and weapon damage feel much more similar to UT99. Players are much less floaty and are more attached to the ground. You can still wall dodge and double jump in UT3, but you can't dodge-double jump and when you land from a double jump your momentum is slightly killed. This means you'll find yourself using double jumps to reach higher spots then you could with a single jump, but you won't want to double jump much while in actual combat.