In cases where a woman has completely and undeniably fabricated a rape story against a man (or against men), why isn't she punished in the same way that you would be punished for other types of false criminal accusations?

The typical reasoning given is that it makes it less likely for real victims to come forward. I would argue that it would make it easier because people would be less likely to assume the woman was lying if there was a higher chance of a punishment if she was making it up. This should lead to people taking rape accusations more seriously, and in turn it would make it more likely that investigations are taken more seriously.

Here's a great example: http://www.thefrisky.com/2009-09-17/...aped-afterall/

Cliffs: Chick gets gangbanged by some guys she just met and cries rape whenever her boyfriend finds out. The guys involved are only saved because it was recorded on video, and it was clear that she wasn't raped. She was not charged.

To clarify, I don't think that there should be consequences whenever it's not clear that the woman lied. Just like any other crime, there should be substantial proof that she lied, etc.