If you go on Wikipedia now, and see a section (https://en.wikipedia.org/wiki/List_of_most_watched_television_broadcasts_in_the_United_States#Average_viewership) that lists the 20 most-watched (https://www.quora.com/Is-MASH-still-the-most-watched-television-finale-of-all-time) American telecasts of all-time (https://screenrant.com/mash-show-finale-most-viewed-tv-episode/) by average viewership according to Nielsen, the series finale for M*A*S*H (https://en.wikipedia.org/wiki/Goodbye,_Farewell_and_Amen) from February 28, 1983 (http://www.tvtango.com/listings/1983/02/28), is the only one that isn't a Super Bowl that's on there. It's currently, ranked in 11th place.

Overall, the final episode is said (https://en.wikipedia.org/wiki/List_of_most_watched_television_broadcasts_in_the_United_States#The_highest-rated_broadcasts_of_all_time) to have averaged (https://screenrant.com/mash-finale-viewership-record-never-beat-reason/) 105,970,000 viewers and earned a Nielsen rating (https://www.mash4077tv.com/articles/gfa-ratings/) of 60.2 with a 77 share. Even if you take Super Bowls into account, the final episode of M*A*S*H (https://www.slashfilm.com/1358950/mash-still-holds-tv-history-record-40-years-after-ended/) is somehow the highest rated American TV broadcast of all-time.

If you discount sporting events like the Super Bowl or the 1994 Winter Olympics on CBS (especially, the ladies figure skating (https://en.wikipedia.org/wiki/Figure_skating_at_the_1994_Winter_Olympics_%E2%80%93_Ladies%27_singles) event on February 23, 1994 (https://www.tvtango.com/listings/1994/02/23/leeza)) or real life, live breaking news stories like the O.J. Simpson trial verdict and only focus on scripted programming, then the next highest rated American TV broadcast since (https://www.yardbarker.com/entertainment/articles/20_most_viewed_tv_series_finales/s1__39839553#slide_2) the final episode of M*A*S*H was the last episode of Cheers (https://en.wikipedia.org/wiki/One_for_the_Road_(Cheers)) ten years later.