Sorry Benedict Cumberbatch, not even your debonair charm could save The Fifth Estate from being the biggest turkey of the year. Forbes magazine crunched the numbers on 2013’s box office returns to put together this list of the year’s biggest duds. Along with The Fifth Estate, which tells the story of Wikileaks founder Julian Assange and earned back just 21% of its initial budget, Sylvester Stallone’s Bullet to the Head, Harrison Ford’s Paranoia, Jason Statham’s Parker and Benedict Cumberbatch’s Julian Assange wig also made the list of worst box office performers …