@Christo04002283Yep it's that arcade balance concept they've been following since Battlefield 1 and, in some degrees, Battlefield 4.
As soon as a weapon has a high rate of fire, it automatically means that it has either a ridiculously low damage or absolutely high recoil if not both, which then again means that these weapons have to be used only by holding down the trigger instead of using bursts.
I miss the times of Battlefield 3 where I could kill people by using bursts with the AS VAL or FAMAS just like I did with the AN-94.
Anyways:
The TL-21 does good damage but is very unforgiving if you miss only once, so I understand if you don't want to use it.
The DC-15LE with explosive shots and decreased recoil on the other hand is great for dealing damage against infantry and having a good accuracy while being more versatile than the Tl-50 and T-21.
Also it's good against other heavies that use shields.
However, against enforcers all of the heavy class weapons come off weak except the T-21.