Bobs1975:
I read it the same way as you but, as originally stated, nobody knows exactly what information is passed on in the name of counter-terrorism.
As analogy, Essex police recently conducted an anti-knife crime initiative where they stopped and searched loads of people at railway stations. They can't stop people in the street and search them without without good grounds, but they used anti-terror legislation to enable them to do exactly that at railway stations. Other police forces, and government bodies, frequently use anti-terror laws to get round both UK and EU legislation, so nobody knows how much they 'stretch' the laws on privacy when it comes to passing information to the USA.
Chris