Oh God no please don't start down this road.
The only reason everybody is using the vector is because the high end blueprint is available from the advanced vendor in the base of operations.
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It is more to do with the fact that some weapon types give a buff just for using it and some do not, Yeah the Vector is the most easily accessible one at the moment but the Aug and MP7 are still SMGs, I guess it depends on how the stats Acc\Stabilty fall on those compared to the vector. While an Assault rifle does more initial damage the SMG give a bonus to crit chance just for using it so will be too good to pass up. It is the same with the Marksman rifle giving a bonus to headshot damage as standard.
Stacking +Crit chance and +Crit damage gear and using a SMG far outweighs using an Assault rifle with superior stats in end purely for the burst potential.


