It is subjective. But I was surprised to see that while I was posting, madprof98 wrote a far more insightful post that said essentially the same thing.
I state as my opinion that Boortz daily demonstrated a far more detailed grasp of current affairs than Cain. That doesn't mean Boortz has a more detailed grasp (I suspect he does), but that he gave more details and explained things more completely on the air.
This is not a 'gotcha' question. Did you listen much to both Cain and Boortz, org.whodat? If so, how would evaluate their relative use of detail in the topics they discussed on WSB?