It can. Just remember that "chest thumping" bass happens around 50 hz, not at 20hz. 20hz is pressurize the room & make you feel like you are under water bass.
To optimize the dual 12" OB's, make sure they are set to cover everything up to 80hz (100hz or 120hz is even better, IMO). Set the low frequency extension to 28hz, set damping to high, and turn on the rumble filter.
Also, measure your room and make sure you've used the EQ to knock down your worst peak (room mode). Only ever try to reduce a peak, never ever try to boost a null (it sucks power like crazy & has minimal effect anyway).
Then, turn it UP! The fact that it's OB and the damping is high will give the impression that bass is 'light' if you leave it set to flat frequency response. By turning it up you get super tight, punchy bass that has impact.
Oh, and after you do all of that, play around with the phase knob a bit - if it's not set optimally for your room and main speakers, it'll cause bass to sound weak.
Properly set up, the OB servo subs should give you a ton of punch.