They are not the same.

cbiebel is a pretty well respected poster an NDN, and has been there forever.

chrisb is a pretty well respected poster here, and if I recall correctly, an ex-Marine or something. Chrisb thinks he is way smarter than any coach ND has ever had, but is basically a good guy. My sense is that chrisb is much younger than cbiebel, and has never posted on NDN (or at least in any recognizable way).