Personally I don't give a fuck who gets paid what. Negotiate your pay according to the free market economy, and get paid what you're truly worth. That should be the end of it, but in 2016's victimocracy it isn't.
Male tennis players usually get paid more than female tennis players, because they are a bigger draw. More ticket sales. More TV sales. Why? Sexist TV viewers of both genders? No... it's because the best get paid the most. Female tennis is a separate division, and everyone knows who would win in a male vs. female tennis match.
Any second tier competition is less interesting and makes less money. Female tennis, local level tennis, dwarf tennis...you name it. While interesting, everyone knows that these events are not the ultimate level of human competition.
But women are now complaining that female tennis players are paid less. The claim is that the personal merit of female tennis players is the equal of men therefore they should be paid the same. Not their skill, not their ability to compete, but their merit as people. It's a struggle for women, they have to make sacrifices to be a top player, etc. All true of course, but the argument also applies to people (male and female) ranked 1000 in the world and no-one is talking about them.
Which brings me back to porn stars. Male porn stars are paid a LOT less than female porn stars, even though they usually have to take damaging drugs just perform their job (viagra) and they work harder (sorry, couldn't resist) than female stars.
So why are male porn actors paid less? Because even at the top of their game, they are less of a draw in terms of box office sales.
So if we allow that female tennis players should be paid the same as male tennis players, the same arguments apply to male porn stars.
Male porn stars should be paid the same as female porn stars, OR female tennis players should be paid less than male tennis players.
Personally I say let the market decide and once you make over $100k per year you lose the right to be publicly bitchin' about how oppressed you are.
TL;DR male pornstars - I got your back.