Do poor reviews lead to poor box office?

Driving home this evening there was a report about the poor performance of the latest Johnny Depp movie "Transcendence" at the box office.  Poor reviews were cited as the reason.  Do reviewers have that much power or do we only ever hear about bad reviews after a poor box office?

Unscientific Test

List 1 Top Ten Box Office 2013
1. Catching Fire
2.  Iron Man 3
3.  Frozen
4.  Despicable Me 2
5.  Man Of Steel
6.  Gravity
7.  Monsters University
8.  Hobbit 2
9. Fast and Furious 6
10.  Oz, The Great and Powerful

List 2 Top Ten Box Office Flops 2013 (Forbes)
1.  The Fifth Estate
2.  Bullet to the Head
3.  Paranoia
4.  Parker
5.  Broken City
6.  Battle of the Year
7.  Getaway
8.  Peeples
9.  R.I.P.D
10.  The Big Wedding

Now look at the lists again with their Rotten Tomatoes score.

List 1 Top Ten Box Office 2013
1. Catching Fire 89%
2.  Iron Man 3 78%
3.  Frozen 89%
4.  Despicable Me 2 74%
5.  Man Of Steel 56%
6.  Gravity 97%
7.  Monsters University 78%
8.  Hobbit 2 74%
9. Fast and Furious 6 68%
10.  Oz, The Great and Powerful 59%

List 2 Top Ten Box Office Flops 2013 (Forbes)
1.  The Fifth Estate 37%
2.  Bullet to the Head 46%
3.  Paranoia 5%
4.  Parker 41%
5.  Broken City 28%
6.  Battle of the Year 6%
7.  Getaway 2%
8.  Peeples 35%
9.  R.I.P.D 13%
10.  The Big Wedding 7%
 
Average Score Top Ten = 76%
Average Score Top Flops = 22%

These results, as unscientific as they are, do seem to suggest a simple conclusion - Bad Reviews = Bad Box Office. However, if you look at the previous Forbes list from 2012 you will find Dredd 78%, Big Miracle 73% and Premium Rush 76%.  Clearly, it is not as simple as some journalists seem to think it is.