http://www.npr.org/blogs/monkeysee/2013/06/14/191568762/at-the-movies-the-women-are-gone "You can apparently make an endless collection of high-priced action flops and everybody says 'win some, lose some' and nobody decides that They Are Poison, but it feels like every 'surprise success' about women is an anomaly and every failure is an abject lesson about how we really ought to just leave it all to The Rock."
And of course, this could just as easily apply - only even more so, perhaps - to protagonists of color as well.