As the judge clearly said it was a highly unusual set of circumstances.
- Everyone who encountered the girl on the evening in question, including the police, had no concern over her age
- As soon as he was informed by the police of the girls age the offender burst into tears, that's contrition/remorse
- He pleaded guilty to the rape charge, he didn't try to defend his actions
Yes, it was statutory rape. The judge said that and the guy admitted it straight off when he found out the age of the girl.
There was no apparent intent by the guy to comit a crime however which is also an important consideration.
The guy made a horrible mistake and broke the law. There's no indication as far as we can tell from the article that there was intent on his part at any point. If, however, he's involved in a future breach of the law this incident will be flagged so he's not getting off completely free.
How far should we expect people to go to verify someone's age before they sleep with each other?
The Guardian article has more details of the judgement:
clicketyEven a spokeswoman for Rape Crisis wouldn't comment on the specific case. That tells you something about the circumstances here. They're not exactly likely to be quiet if they thought the ruling was wrong.