These are the things I managed to pick up on when playing Crysis 2 compared to Crysis 3:
Significantly Better gunplay:
Better Animation quality all around.
Better Player models.
Significantly better map design all around.
Less BS (Although there still quite abit compared to other games)
The energy management Meta Game (Creates alot of tension and but clenching)
3,5,7 Killstreaks work better than 3.5.7.10
Air Stomping Takes skill ^^
Skippable Killcams!!
More stable Killcams
Unlock Tokens
Damage Model is very satisfying.
Higher Skill Ceiling.
Less emphasis on Grinding the best equipment and more balanced perks + equipment. (Although still suffers from giving new players crappy gear, or that the gear is way too good when it's leveled up).
No VTOL/Pinger nonsense.
Jackal's Default Reload is so much cooler.
Guns don't swing and sway in your face when you strafe and ADS.
Sighted movement spread is signifcantly lower allowing accurate fire even when power jumping.
Each map has a unique feel, Not all of them have a forced "Overgrown" theme which I don't really like that much.
However Crysis 3 isn't all bad, there are good things in C3 that aren't in C2 such as:
Alien Weapons
in-game Customisable weapons.
Interactive environments such as kicking doors down, and Poles!
Crash Sites with Shields on them
I've been really re-invigorated recently after playing Crysis 2, After playing over 1k hours of it on xbox, I'm having a ton of fun on it despite it.
So if anyone on here still has Crysis 2, hit me up onit and we can play some games (I have all DLC's)
Oh yes and the Crysis 2 Fy71 is my new favourite six toy