Yeah, it's weird how there is this 'thing' that women aren't funny. Any comedy panel show will illustrate that. There is NEVER (well, nearly never, i'm sure there is one exception!) more than one woman on a panel of say 6 and they don't get much air time.
Have you noticed though, like on mock the week that they way to get edited in is to shout over everyone else to get your joke in. I think this is why women don't feature so much because they're not as aggressive.
I don't think that article is a joke because it seems they have done a little survey and are 'reporting' the results of it. It isn't a very good analysis though because it doesn't consider why this appears to be the case.