The fact he makes such a statement means two things. One, he's never bothered to look. Two, only interested in FUD'ing.
Of course, you are wrong. I've spent quite a bit of time in both SQL Server BOL and PG 8.1 manual. The PG manual may be one of the best OSS manuals but it is far from THE best manual. It's extremely weak in the areas of administration. And if you're brave enough to make a suggestion on one of the PG boards you are usually met with elitist resistance as if their acceptance of a suggestion is somehow a indication of failure. This is especially true if you reference a MS SQL example.
I'm curious: which Windows-only packages are hot in your field?
Microsoft SQL Server 2008.
Ya'll hear about the geometer who went to the beach to catch some rays and became a tangent ?