The Bengals averaged a 60 percent audience share for the sloppy 20-7 win over the Carolina Panthers Sunday afternoon on WKRC-TV (Ch 12). Viewing reached an astounding 69 percent at 3:30 p.m., when the Bengals held a slim 13-7 lead. As usual, the Bengals game was the No. 1 TV program here Sunday, averaging a 33.1 rating (or 306,770 TV homes) and a 60% share.