currently use wp sitemap generator with two sitemap (xml and xml.gz), my question is should i submit both sitemap to google webmaster tool or either one only ?

cause my Mr. G webmaster tool show below static :
sitemap.xml = submit url 39058 -- index url : 14245
sitemap.xml.gz = submit url 39085 -- index url : 14245

but google = site:malaysiacar.org show 34100 url index.