Wikipedia now has a page that attempts (with stress on the word attempts) to make a comparison between Windows and Linux. It’s growing at a rapid pace, although no matter which side of the fence you sit on, it’s not going to look fair.
I suppose it’s worth referring people to, if it ever comes to that. If nothing else it has a strong list of external links that could support or refute either side of the argument.
I don’t see any fault in keeping a page like that on hand, even if it’s little more than a battleground for respective zealots. It won’t do any good in convincing a person to use one or another, since choice is ultimately a personal event, and preference is blind to facts.
Thanks to -Slash- for pointing it out here.