I imagine a good OC with a great QB makes for a lethal combo, as a competent OC can mix in plays that compensate for more average WRs, and a very good TE is a duh help. I suppose if the OL is porous if can render a great QB somewhat impotent.
I heard the term "Cover Zero" from the Dawg QB, I had not heard that before, I understand the meaning, I'm not sure why the term had escaped me, maybe they just call it man to man otherwise? He was commenting that Miss State was in Cover Zero fairly often and that is why he went up top (duh).