You are looking at the HTML representation of the mFormat?> format.
HTML is good for debugging, but probably is not suitable for your application.
Please see "format" parameter documentation at the API help for more information. 
<?xml version="1.0" encoding="utf-8"?>
<api>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <revisions>
          <rev revid="77" pageid="1" oldid="85" user="Bankhippy" timestamp="2010-10-28T15:50:37Z" comment="/* Compass */ added online banking and main street banking" />
          <rev revid="75" pageid="1" oldid="83" user="FredericBaud" minor="" timestamp="2010-09-28T07:58:35Z" comment="rollback" />
          <rev revid="74" pageid="1" oldid="82" user="Greenway747" timestamp="2010-09-27T22:22:36Z" comment="/* Life of the Community */" />
          <rev revid="73" pageid="1" oldid="81" user="Greenway747" timestamp="2010-09-27T22:22:17Z" comment="/* Life of the Community */" />
          <rev revid="71" pageid="1" oldid="79" user="FredericBaud" timestamp="2010-09-23T11:16:37Z" />
        </revisions>
      </page>
    </pages>
  </query>
  <query-continue>
    <revisions rvstartid="70" />
  </query-continue>
</api>