It is difficult to generalize across EU countries and even institutions, but from what I have experienced it is easier to find a job with a US PhD. Yet, we have many examples of successful mobility from the European universities to the USA. It all depends on a) quality of publications at the end of a PhD, and b) quality of the PhD level training provided by the institution. In the Netherlands, most PhD programmes support a 4-articles PhD dissertation. Ideally, 2 papers from the dissertation get published in journals with the impact factors of for example JVB or higher, before the job search. Clearly those who get their papers considered by the AMJ and related journals, will have doors open in many institutions.
New Book: Arthur, M.B., Khapova, S.N. & Richardson, J. (2017). An Intelligent Career: Taking Ownership of Your Work and Your Life. New York: Oxford University Press
Hi Gina: Thank you so much. Good suggestions and will pass along to the student. Take Care, Sherry