Literature in Official Study Guide vs. Kaplan/PR

<p>I recently took the Literature practice test in preparation for June and scored a 750. This came as a shock as I was previously using Kaplan/PR, never scoring above 700 for the practice tests.</p>

<p>For people who have taken Literature before, is the actual test similar in difficulty to the one in the official study guide? I'm just confused with my performance as I read that Kaplan/PR are suppose to be very similar to the real thing but yet I have such different discrepancies between the two</p>