The US get it wrong, as they do about so many issues in academia. They throw the title 'Doctor' at anything that moves, Vets, Chiropractors, Dentists, none of whom hold a true Doctorate. I ended up with mine after a 3 year BSc, one year MSc and 5 years of original research for the PhD. You can possibly see why the US system irritates me and those like me. As an aside, lots of things in Delaware are very questionable.