BTW: Agnitum is making the same unfair comparison by comparing their Pro version to the Kerio personal (limited) version here. It's still a good chart, though.
Agreed, but I do think Kerio holds it's own even against the Pro one in quite a few areas Now, with both purchased and full version of the software, I'm sure they would stand toe to toe if not beyond (in kerio's name). I may just be biased though.

edit:

Let me also say how much I hate firewalls that preform web filtering, popup blocking, active x fixing, and other non-firewall related things. I enjoy having a firewall without it taking the incoming HTML (which slows it down) and recoding it (view the source, especially on zone alarm, it comments changes) to remove things. If I want to get rid of ads I will use the appropriate browser rather than extend the firewall to more aspects (thus a higher memory footprint) in terms of bloat and more features to find exploitable (ie zone alarm and older sygates for html ad parsing)