All of my tests focus upon the technology of security. They don't play favorites. They are unbiased, and all firewall vendors are treated alike. But . . . Selling security is a serious business.
Users depend upon vendor representations.
If the products being sold are insecure, users deserve, want, and need to know. No two firewalls are the same, but there is no way to know from the surface how they compare. Claims are just that. Over time the user community and PC press need to develop a general awareness of which firewalls seem more secure and which seem to be less. But when pitted against vendors' massive marketing budgets, a general awareness of the truth would not be achieved by having me secretly whispering into the ears of those companies who were producing inferior firewalls.