There seems to be little support for Page Level testing prior to Sitecore 8 - though it can be done.
This document (applicable to 6.6) has instructions on how to setup a Page level test and it is not as straight forward as a component level test.
http://sdn.sitecore.net/upload/sitecore6/66/marketing_operations_cookbook_sc66-a4.pdf
As for stats as to which page is more effective, there are no default reports you can run as far as I'm aware, but you should be able to see which variant of the page had the most engagement value points to determine which is the most successful. You could try using the Engagement Analytics Report to see this data.
You could try installing this module to see if there are any useful reports which would help with testing.
https://marketplace.sitecore.net/en/Modules/SBOS_Accelerators.aspx