Not imroved it? You're either being ignorant or you're blind.
-Saved Films
-Forge
-Matchmaking has seen tweaks and improvements
-4 player Co-op over Xbox Live
-More in-depth customization
-Halo 3 File share
-Removed the button glitches and superjumps
No Improvements on Halo 2 there
I dont see why you're all arguing though since you're either going to prefer Console or PC its not a case of which is better.
-Saved Films
-Forge
-Matchmaking has seen tweaks and improvements
-4 player Co-op over Xbox Live
-More in-depth customization
-Halo 3 File share
-Removed the button glitches and superjumps
No Improvements on Halo 2 there

I dont see why you're all arguing though since you're either going to prefer Console or PC its not a case of which is better.