LOS ANGELES (AP) — Olympic thrills and the aftermath of a patriarch's death on "This Is Us" combined to give NBC a golden ratings victory. NBC's total viewership last week topped that of the other three major broadcasters combined by 27 percent, the biggest network regular-season gap since Nielsen's electronic "people meters" began measuring ratings. That comes with an asterisk: It's not measured against weeks that included Super Bowls and a full seven nights of Olympics, NBC said Tuesday.