Don't give women THAT much credit.
There's a lot of muslim marriages that are dumpster fires because of jealousy and the wives just not getting along but still last a while because the husband won't let anyone leave. There's also been stories of wives/concubines of Chinese emperors murdering each other or each others' children in some kind of strange political-jealousy plot.
On the flipside, there are cultures with lifelong reverse harem marriages. Not sure how much better or worse they are though I give the practice in Nepal props for at least giving families tips on how to keep the men from getting jealous even if the advice is kind of gross. (The advice is for the wife to sleep with one husband after the other in the same night if she sleeps with any lol.)
I'm guessing sometimes harem-type relationships can work in other cultures where marrying for love isn't really a thing but I wouldn't assume poly works more or less depending on the gender makeup. Women and men both get jealous.