Nice catch...didn't see that. He's definitely stretching to make the claim, if he's using percent of US page-views as his metic.
POF's page-view count per user is so absurdly high that you really have to wonder what he's doing to get it there. The other major dating sites (which have roughly the same modality of search-and-view) all have page-views/user of around 10-13. It's awfully suspicious that he's managed to double that number....