Privacyware's Privatefirewall

confusing cnet ONLY 5*ranking vs Product ranking: #13 in Firewall Software
surely it should be no 1 then?

this is an example.

http://download.cnet.com/Privatefirewall/3000-10435_4-10371057.html?tag=lst--1

also confusing is PCMag's antivirus round up which suggests zonealarm free is best but cnet editors do not rate it.