A WNBA team could handle a high school team, easily. The athleticism between those women, and Jimmy, the slow kid in Algebra class who plays center in the high school team because he is 6'3" would almost certainly favor the girls.
However, I think the heavy majority of NCAA DI teams would mop the floor with a WNBA team. The men would just be too big, too fast and too strong for the women to compete. The best WNBA guards might be able to hold their own against your average DI men's guard, but even Griner, the "most athletic big" in WNBA history is significantly weaker and slower and less skilled than just about any guy playing at her height.
There are some women's sports I prefer to watch over men. Women's tennis I think is frequently more entertaining, as it leads to far more volley's and strategy than the men's power game, women's volleyball is legit entertainment... and not just for sex appeal. If a women's league were to ever somehow catch on I think thats the best bet. Their brand of volley ball is action packed, filled with volleys, dives and spikes, while the men's version is just a massacre of spiked balls. But the basketball is a fast paced, above the rim game, a marvel of athleticism, that I find the women's version to be absolutely brutal to watch.
