[soon2bepro]

This is somehow correct. But try any another subject where this people is emotionally attached to and you'll find similar results. In fact I doubt you'll find many cases where the result varies a lot, since people tend to have emotional attachment to anything they have a formed opinion for. I usually just go one step ahead and say these people can't reason correctly. Yes, that is wrong, they can, but it's so hard to find a subject where they're apt. And their reasoning capabilites are so rusty because of lack of use, that even if you find one, their performance will be mediocre at best.