It's already been pointed out the difference between the gun's kick and gun's recoil (the latter determines the in-game" accuracy" bar).
Well, having unlocked a fair amount of the guns, I've noticed: In general, there's an inverse relationship between a gun's view kick and the tightness of its bullet spread. Probably to keep the guns balanced and not have a laser like the ACR from MW2.
So, for example: The AKS74U and XM8C have comparable accuracy, whether burst-firing or going full auto. But the AKS74u's spread is tight with higher vertical kick and the XM8C's spread is wider with less vertical kick. So, the AKS74u's spread will tend to be a vertical line, while the XM8C's spread will tend to be more circular.
What really matters is how quickly BOTH the kick and spread move, how quickly they recover, and what you're most comfortable.
I come from COD, so I prefer the AKS74U. Maybe other guns might be better, but I prefer a gun where the bullet goes mostly where sights are because, otherwise there's not really a visual cue to know how to burst-fire for. But you can master one of the other weapons if you know, from experience, how to burst-fire at various ranges.
There can be exceptions, though. For instance, I think the MP412-REX's view kick is so high and so slow to recover from that the M1911 is a better side-arm, despite the fact that the REX is like a laser that always goes exactly where you aim it.
Last Edit: Mar 12, 2010 9:36:38 GMT -5 by individual