title: Google classic vs universal analytics visit count
body: <p>As <a href="https://support.google.com/analytics/answer/2817075?hl=en" rel="nofollow">recommended</a> by Google, we are testing universal analytics by using both classic and universal (ga.js and analytics.js) on our site right now.
  Quite randomly, I decided to compare data between the two accounts. </p>
  
  <p>I was quite surprised by what I found: visits count, as well as visitor count differ by close to 30%:</p>
  
  <ul>
  <li>1492 visits yesterday according to classic analytics</li>
  <li>1005 accorting to universal)</li>
  </ul>
  
  <p>Also, pageviews, for instance, are roughly the same (3409 for classic, 3391 for universal). </p>
  
  <p>Note that the session duration was kept by default at 30 minutes so 'visits' should have the same meaning in both cases, right?</p>
  
  <p>Is this an expected behaviour or are we doing something wrong?</p>