I know it is a different kind of AS but what I was getting at is why they made a different version? CE's AS was kickass, near god like, no need for a different version. I was trying to rationalize why, which is the point of this thread, Why?
I'd say it's because the Halo: CE AR was OP. Defender says there's recoil like other games but at least for the first game, I don't remember anything of that nature. If it was there it was negligible. The AR had the range and damage of a rifle, but the magazine size and firing rate of a submachine gun. I'd say that the Reach and Halo 3 ARs are really only the same as the Halo: CE AR aesthetically. In the newer games, the ARs spread increases over time to encourage less rapid fire, and the clip is smaller so you can't massacre an entire squad of grunts and an elite without at least emptying your clip.