It's absolute fact that dads get destroyed by the courts.
http://www.nytimes.com/2009/11/22/ma...agewanted=1&hp
Now, I'm not saying that there aren't dead beat dads out there. However, this article strikes true because this is the legal system that is handing out these rulings. This isn't just a case of some dude not owning up to someone he knocked up.
You can argue case by case to see who got screwed and who got the better end of the deal, but an article like that shows that all else equal, the courts will side with the woman every time.