There's a difference.

Hell yeah I want to see Shoot 'Em Up this weekend. Unfortunately, there's a problem.

There's a difference between an apostrophe and a single open quote. The official "Shoot 'Em Up" logo has the wrong one. It should be an apostrophe, but it's a single open quote. You should never use an open quote, single or double, without a close quote.

You can see this tragedy on the movie's website. I should have added this to my list of Things I Don't Like, lousy apostrophes. Or maybe a new list of Crimes Against Typography. We can lump in here as well the department store signs that say "Mens" and "Womens" without using an apostrophe at all.