Yes big cities are always more dangerous. Sosua is a small as beach town, If the tourists weren't there the town wouldn't be there. The Su is also well policed with the Police station right off the main strip.Would you say that Santo Domingo (as a whole) is more dangerous than Sosua? More dangerous than Santiago? Why or why not?
That being said some tourists were recently robbed by a Cop from Santiago so there's that. Hold your head.