Dear Exlibris: In my experience if you choose the right cartridge to match the tonearm you can have very good bass response ( everything the same in the system ) it does not matter if is pivoted or linear tracking.
Now, there are differences in the kind/level of bass in a linear traking and in a pivoted tonearms. In my experience, too, the best bass comes from the pivoted tonearms: solid, tight, no overhang, right pitch, etc, etc and as good the linear tracking are these ones are outperformed in that area for the pivoted ones.
I think that the mechanical grounding in the pivoted tonearms makes the difference against the air bearing linear tracking tonearms or the magnetic bearing on the Shoroeder one. Those air/magnetic bearing tonearms outperform the pivoted ones specially on the whole soundstage presentation.
Right now we are on a tonearm design ( and we want to build the best ever, this is our target: nothing less ) and we choose a pivoted one. I'm not saying that because of that the pivoted is the best, no the linear tracking ones have many advantages and as a fact we are on the research about too.
Regards and enjoy the music.
Raul.