I saw these earlier. These seem to be the only numbers, or 'real' numbers available. But they're OLD! ZServer has improved between Zope 2.1 (which is when I last used it) and now. I think showing Zope to be faster than Tomcat, as the numbers indicate, will be difficult to support, especially since I don't believe it myself.
I don't know what's not to believe. A servlet engine has at least as much to do as Zope, if not more. Although benchmarks are a very small part of the story as far as I'm concerned, there is a need for such numbers. I think I'll try to find time Thursday to do some tests with the usual suspects (at least so far as my work is concerned): Zope, Apache, Tomcat, Jetty, and maybe a little JBoss. The results will certainly be published. --jcc