Hahait might seem trivial but it matters. It's an added level of gameplay satisfaction when you shoot a body on the ground and it reacts, or tossing a grenade at a pile of dead enemies and watching them fly.

Coincidence or not, but some of my favourite games had this feature (Counterstrike Source, GTA4, Metal Gear 4, Gears of War).

Could owners of either game please comment on how the dead bodies react when shot at/walked over/blown up?

For me a lack of freemoving ragdoll physics on corpses really drop the immersion factor down a notch, to the point where I would not buy a game, or if I bought it I would resell it on eBay (Far Cry 2 and COD4 MW spring to mind). Thus it is really important to me that Uncharted 2 and Infamous have this aspect down pat, ala MGS4 and GTA4.

I'm looking at buying these 2 games in the coming weeks so your feedback is appreciated.