title: Yii createCommand vs Criteria
body: <p>I've looked everywhere and couldnt find an answer to this puzzling question..</p>
  
  <p>I can do almost everything with Criteria (although it might look "bad" as code) as i can do with createCommand.</p>
  
  <p>So my question is: is there a performance difference or is it just 2 ways to get the same result?</p>