Per this article the women’s final avg rating was 2.44 million while men’s final was 2.05 million. Peak audience for men was 2.7 million. Overall ratings were up for 2021 US Open compared to 2020. College football on Saturday and NFL on Sunday both had to deal with competition so please no arguments about how Sundays ratings were effected.
It would be a disaster for WTA if they cannot back their results. The only one that's been consistent the past year is Barty and she is not a draw. If either Raducanu or Fernandez can become a new force maybe they will draw the attention back to WTA. At this moment, it's still to be seen.Remember when some posters on here said that a Emma-Leylah final would be disaster for WTA
Slam ratings at the US is typically higher for women these days cause there are no top USA representatives in the men's that would be a threat for the title while there is still the has been Williams or even the likes of Kenin and Stephens for women. Without Federer or Nadal men's singles is typically not of interest. Djokovic is also not a major draw.
Also, I am unsure how this rating could translate to WTA if WTA cannot even show case most of their matches on TV or even on live streams. The events in the US and Canada are especially the worse when most earlier round matches (not just qualifying matches) are not shown. No one wants to sign contracts with WTA. They could hardly get a stable platform for their matches.