Rufus,
Im inclined to agree with your belief.
One would have thought that the aggregate of the evidence would mean they dropped the case straight away.
But they didnt, much to the incredulity and exasperation of the accused man.
He maintains the police didnt seem interested in counter evidence at all at the start.
The police may give a different version of events of course, that being said, I have heard of some excellent police work over the years, and have also heard of some incompetence and/or over zealousness. Im sure you have too.
I too would (like to) believe the police would not jump into a rape case recklessly, however she may have been a very convincing witness with an impeccable record.
In regard to your last sentence- its a matter of fact that some rape cases are discontinued simply due to lack of evidence or lack of a likely conviction which tragically means you have a proportion of victims who never receive justice.