[Zope-dev] Zope vs. .... & missing features

Hi, Have anybody compared Zope to Roxen? Midgard? Or similar products? I saw Roxen had document revision system, a thing I "reported missing" earlier in this list. It also had full support for XML 1.0 and XSLT 1.0 or at least that`s what they claimed. These two features should be stuffed into Zope too somehow. Or should they ?? Any changes in these areas in the new 2.2 release of Zope? Thomas