subdomains with a PR higher then the home page.

[visio]

Any ideas why a subdomain of mine which as no INCOMING links and the text is just 300 words and sometimes there is no text at all because it is a test site and customers can play with it, as a PR of 4 while the index page is 3, the subdomain is traffic.hosting-marketers.com

Also on the same site the directory which again as no incoming links as a PR 5 hosting-marketers.com/directory
???

[crush123]

google wont display all the backlinks it identifies for any web page. sometimes it may show only few or it maynot show any.
further, the page rank displayed in the toolbar may not perfectly represent the one maintained by google.
there can be some difference.