I'm more then adapt at using it but it seems silly that a gun that is esstinally a battle rifle still fires bullets at the same speed as the scar-scarab.
This is all according to the weapon charts:
http://www.joinaclan.com/wp-content/uploads/2011/04/crysis_2_weapon_damage_chart1.png
I'd say double the speed of the other assaults would be an interesting balancing choice.