They're probably "mass-produced" versions of the suit from the first two games, since this "Crysis" is now on a global scale. The suit from the first two games is probably a prototype made specifically for Prophet and his team.
That's fine, but creating a fluffy story to give some reason doesn't remove the boredom that I experience from playing a generic FPS. The suit pretty much does nothing special anymore. So why did they bother calling it Crysis2? May as well called it "Generysis".
The only ray of light is that the game becomes moddable, and someone digitally attaches some BALLS back into the game.
In the meantime, I will keep waiting for BF3, but I ain't holding my breath. I now can't remember 1 port that I have played that hasn't been severely "nackered" from the experience.