Hell yeah serum is easier, it has wavetables and built in effects, and all the lfos can be assigned to any knob on serum, meaning you don’t have to automate everything like in AT
I mean for dubstep, it's not great, but it's not bad either. Use less saturation first off. One exciter is enough saturation. Also, eq eq eq. Eq is v important. Put a limiter on your bass. Also put reverb after your limiter, cuz you wanna sound like a pro.