TDM/KC -
Slow fire with higher damage - mid to long range fights. My best k/d's in TDM in the past were with the AR 3 round burst weapons (FAL & M4) where you had to aim and could keep your distance.
The STG-44 was the closest thing I used that was like an SMG in WAW....which is the BAL now with more recoil.
I can get a lot more kills with the ASM1, but my k/d is higher with the BAL and AK.