Well considering the EU has no guns, no army, no police force[1], no courts
for people, and no prisons and the Netherlands
does, it's obvious which to trust.
EU law binds countries, not people. If a country does something that goes against EU law (which happens all the freaking time), then you can sue the country in the EU courts to get the country to change the law. The EU isn't able to arrest you. And regardless, it's the national law is the only real law. EU law is just what a country is supposed to do.
[1] There is Europol (European Police Office) which is only for aiding cooperation between national police forces. It has no powers of arrest, and (most tellingly) it only has 800 staff for a population of half a billion people.