The top 10 list of overpaid actors in Hollywood is made up entirely of men.
Topping the list is Johnny Depp, whose films made $1.20 (81p) for every $1 (67p) he was paid.
Meanwhile four of the five best value actors are female, with Emma Stone, Mila Kunis and Scarlett Johansson all making a good return for their films.
But, given that the 10 highest-paid men in Hollywood take home twice as much as the women, is it surprising they don't offer studios as good value for money?
Forbes estimated that Robert Downey Jr earned $80m (£53.8m) in 2015.
He leads a list of 10 actors who - combined - made $431m (£290m). Compare that to the 10 best-paid women, who cumulatively made $218m (£147m).
Natalie Robehmed, from Forbes, told Newsbeat she ran the numbers for both men and women to create the list.
"There were just no women among the bottom ranked, since they rarely earn enough to give them the dismal returns some expensive returns some expensive leading men see," she explained.
Some of the biggest films of the year - Fifty Shades of Grey, Star Wars: The Force Awakens and Pitch Perfect 2 - have had a female lead.
"There's a long held-belief that movies with male stars perform better at the box office," Cathy Schulman, the president of Women in Film has previously told Variety.
"I don't believe that's true."
"People with more experience are paid more," Nancy Dubuc, president-CEO of A+E Networks told the magazine.
"The problem is that the industry continues to give a disproportionate number of men the opportunity to gain that experience, so it becomes a self-fulfilling prophecy that men earn more than women."
Jennifer Lawrence is eighth on the list of best value actors, with her movies making $39.10 (£26.30) for every $1 she was paid. She is also the best paid actress in Hollywood, making $52m (£35m) in 2015.
Earlier this year, the 25-year-old said she was "mad" when she found out how much she was being paid in comparison to her male co-stars.
"When the Sony hack happened and I found out how much less I was being paid... I didn't get mad at Sony. I got mad at myself," she wrote on Lena Dunham's website Lenny.
"I failed as a negotiator because I gave up early. I didn't want to keep fighting over millions of dollars that, frankly, due to two franchises, I don't need. (I told you it wasn't relatable, don't hate me.)"
High profile women including Elizabeth Banks and Jessica Chastain tweeted their support of Jennifer Lawrence, after the article was published.
She's not the only star in 2015 to have taken a stand over the amount women in Hollywood are paid.
Sienna Miller said she turned down a play because she was offered less than half the pay of her male co-star.
She said she did "what we have to start doing, unfortunately, at the expense of our creative dreams".
Patricia Arquette called for pay equality in her Oscar acceptance speech earlier this year.
"It wasn't all about actresses - it [the data] actually also revealed that [in] other departments there was also great wage disparity - editors and sound mixers... and so on but this is now changing," she told BBC News.
"Now if women take action, the company has to prove that they were not discriminating against them."
Comedian Amy Schumer has previously joked about "the poor victims of Hollywood" and pointed out that the issue of equal pay goes beyond the movie industry.
"If we raise minimum wage, most minimum wage workers are women... that'll help," she said.