I will say this. As someone who has played the Left 4 dead 2 demo extensively...It ROCKS!!!
It's better than the original in every way. Valve has done a remarkable job at making it stand out. I thoroughly expected to be disappointed. My only complaint about the demo itself is it is too short and too easy, problems that the full game will remedy.
It looks like a graphics mixture between HL Episode 2 and TF2 but with the L4D game engine.
What?! Sigh... I really didn't want the cartoony graphics from TF2 in L4D2. Anyone got some screenshots of the demo in game? My home PC is out of commission right now, doing some hardware/software upgrades. I found some on google, but they are blocked here at work.
It does NOT have the cartoony graphics of TF2. I can upload a screenshot tonight if noone else has. The graphics are actually improved over the original L4D.