You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20130626002905" timestamp="2013-06-26T00:29:05Z" ns="0" title="ARC disassembly" />
        <page value="20130626055625" timestamp="2013-06-26T05:56:25Z" ns="0" title="ME blob format:GLUT example dump" />
        <page value="20130626060125" timestamp="2013-06-26T06:01:25Z" ns="0" title="ME blob format:LOCL EN example dump" />
        <page value="20130627084754" timestamp="2013-06-27T08:47:54Z" ns="0" title="Resources" />
        <page value="20130627173016" timestamp="2013-06-27T17:30:16Z" ns="0" title="ME blob secrets" />
        <page value="20140102082043" timestamp="2014-01-02T08:20:43Z" ns="0" title="ME hardware" />
        <page value="20140102082531" timestamp="2014-01-02T08:25:31Z" ns="0" title="Main Page" />
        <page value="20140106135345" timestamp="2014-01-06T13:53:45Z" ns="0" title="Management Engine Registers" />
        <page value="20140122061457" timestamp="2014-01-22T06:14:57Z" ns="0" title="ME blob format" />
        <page value="20140124074408" timestamp="2014-01-24T07:44:08Z" ns="0" title="Huffman speculation" />
      </results>
    </querypage>
  </query>
</api>