Purely personal opinion here.
I've not tryed
vaping from a bottom feeder, and I never got the hang of dripping on an atomizer. However, I would imagine that the two taste exactly the same, as a bottom feeder is essentially dripping on an atomizer on the box mod.
I've tried both the clearomizer and a cartotank. The cartotank wins hands down in my opinion.
I can give a rationalization to my experience. A clearomizer wicks its flavor (juice) via small silica string wicks to the heating coil, which represent a relatively small surface area. The cartomizer, on the other hand, has the heating coil completely surounded by the polyfill wicking material, a much larger surface area by comparison, thus much more flavor production.