NEW YORK - NBC's bionic heroes defeated some other people's heroes on ABC and CBS to win the first Sunday movie showdown of the May ratings sweeps.

"Bionic Showdown: The Return of the Six Million Dollar Man and the Bionic Woman II" ranked 11th for the week, with a Nielsen rating of 17.6 and a 28 share.

ABC's "My Name is Bill W.," about the founder of Alcoholics Anonymous, had a 15.2 and 24 and ranked 24th. Part 1 of CBS' two-part "Guts & Glory: The Rise and Fall of Oliver North" came in third Sunday with a 14.0 and a 23 share to rank 31st.

NBC won the week ending April 30, its 45th in a row, with an average rating of 13.7 to CBS' 11.7 and ABC's 11.4. The week included five days of the May sweep, one of four monthlong periods a year when local stations' ratings are measured.

The rating is a percentage of the nation's 9.4 million homes with television. The share is a percentage of sets actually in use.