Did all SMGs and Assault rifles get nerfed except the M5A3?

As of late the assault rifles and SMGs all seem equally bad - just weak and generic ability with different skins - except the M5A3.  The weapons used to be advantageous in some situations, disadvantaged in others.  No more, just boring, not much use for most of them unless you want to lose to anyone with an M5A3.  I've played with all the weapons and till recently I felt they were all balanced rather well.  Weak in many situations, OP in others.  I picked the weapon based on the map.  The M5A3 was always a good weapon.  A well-balanced, go anywhere weapon.  It was not OP but had good stability and accuracy to compete against other weapons.  The AC-42 was great (previously), it was strong but took more effort to hit the target than the M5A3 - often my last bullet scored a kill.  I used the M5A3 for mid-range combat but would carry the AC-42 for closer battles, a shotgun for ultra-close. Picking a weapon required looking at the map and planning where to go, then choose the appropriate weapon.  Now it doesn't matter what map or flag.  If you don't carry the M5A3 you die.  These thoughts do not involve the other weapons such as sniper rifles, railgun, shotgun, or crossbow.  Just seems like every SMG and assault rifle had their strong points nerfed, except the M5A3.  I'd preferred the way it was before - more variety, more strategy.  The vault weapons definitely need a buff, they are good now ...unless the enemy has an M5A3.