Thanks for the heads-up.

I took the Troopers and Gunreal ragdolls for a spin, and compared them side-by-side (even recorded some video while I tested).
There are some physics adjustments we still need to make (example: plasma and several other types of fire push the ragdolls too hard, so they get launched when you make a kill) but Gunreal's speed, friction (which allows ragdolls to roll naturally), and weight seem a lot more realistic to me. In action, the Gunreal ragdolls behave extremely simlarly to Half-Life 2, minus the HL2's more rubbery feel (Gunreal ragdolls are more stiff, like you mentioned), and I also forced myself to watch a bunch of YouTube skate crash videos, to study the motion. It's not perfect yet, but give or take a few details, I think it's darn close!
Also, as for the Troopers ragdolls seeming more elastic and stretchy, they are built differently - we wouldn't be able to weld all the UT characters' joints to get that effect, but it wouldn't look good, either, because 75% of the bots have metal and other non-stretchy materials covering most of their moving joints.

Here's a video with a couple recordings I did: (it plays at super speed, because I Frapped it too fast [45 fps] and my stupid video converter thinks it should play super fast)
http://www.deefrag.com/files/Temp/video/gunreal_ragdolls.swf