rape prevention as tweeted by Sarah Silverman and general income inequality

A couple weeks ago, men were upset by a "sexist" tweet about only men can prevent rape by resisting the urge to rape, this week Sarah Silverman is championing equal pay.
Both matters are important, but I'm not sure Sarah Silverman is the right person to discuss the matters. Rape isn't funny, but she treated the subject as joke. I was almost tempted to share with her the article of how the US has more men raped than women, due to its prison system.
The equal pay campaign isn't new, I just saw an article in the UK Daily Mail today that talked about her getting $10 a week compared to $60 when she was doing stand-up somewhere. I find the argument flawed based on the fact that anyone getting on stage getting equal $ sounds fair but doesn't go into the quality nor ROI of the performance.
If a guy is getting people to come see him perform and they are buying booze at full price then he merits more take home than a gal rim-shotting to an empty room during happy hour. I'm not sure of what the scenario actually was in Sarah's life experience, but it's not a fair story given her biased memory.
Only one profession I have ever heard where the pay inequality favored women, and it was in the porn industry. I suppose others exist, but they're trivial. I suppose women could form unions and holdout for higher wages, but part of me thinks that having more people competing for same jobs only drives the wages down for those jobs. There are jobs that women are less likely to pursue, while jobs considered to be women's professions don't exactly pay much even when they require education degrees (like librarians and teachers).
Women don't play in the NBA, NFL, MLB or NHL, yet those leagues aren't sued for discrimination. Those jobs pay minimum six-figures and don't require college degrees, I'm just waiting for the day that the leagues are required to play women or at least hold roster spots.