I am pretty sure (and a friend of mine too) that Crytek lowered the movement speed. Even though I know there is already a thread about it and Crytek (I think it was Cry-JohnC?) said they didn't:
I don't believe them.
Play it and tell me you don't "feel" a difference from the beta to the final.
I cannot kill more than 1 guy with my FY, when multiple people are in front of me. The movement, the strafing: everything is totally **** *cry*