The one reason you know that something is weird is because courts/police/governments usually don't try to prosecute rapists this way. Usually rape victims are ignored. Seems the only way to get the state and police to really care, is if your rapist is an enemy of the state.

Also the UK will not extradite murderous dictators if they don't want to. (e.g. Augusto Pinochet http://en.wikipedia.org/wiki/Indictment_and_arrest_of_August... ).

It's very fishy, but that doesn't mean Assange has immunity.