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-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20081201215841" timestamp="2008-12-01T21:58:41Z" ns="0" title="Marvel vs. Capcom: Clash of Super Heroes" />
        <page value="20081201215916" timestamp="2008-12-01T21:59:16Z" ns="0" title="X-Men vs. Street Fighter" />
        <page value="20081201222504" timestamp="2008-12-01T22:25:04Z" ns="0" title="Helper" />
        <page value="20081208070511" timestamp="2008-12-08T07:05:11Z" ns="0" title="Ghosts &#039;n Goblins" />
        <page value="20081210052042" timestamp="2008-12-10T05:20:42Z" ns="0" title="Suave Dude" />
        <page value="20081218213732" timestamp="2008-12-18T21:37:32Z" ns="0" title="Tuxedo Servbot" />
        <page value="20081219110032" timestamp="2008-12-19T11:00:32Z" ns="0" title="MvC Angel/ArchAngel" />
        <page value="20081221190754" timestamp="2008-12-21T19:07:54Z" ns="0" title="Marvel Super Heroes vs. Street Fighter" />
        <page value="20090102194344" timestamp="2009-01-02T19:43:44Z" ns="0" title="Adrob" />
        <page value="20090305171153" timestamp="2009-03-05T17:11:53Z" ns="0" title="Galactus" />
      </results>
    </querypage>
  </query>
</api>