Not close in skill at all (Serena at her peak badly lost to like 200 ranked dude), but still almost as good consistent entertaining viewing as sport still. Literally only female sport I could say that of. Every grand slam back then you could change between the male final to the female one, where both could be fun competitions.
While for example when it comes to female basketball or football, I laugh at just seeing how far away they are, can't watch it (except Marta, she is a baller).