I remember reading some interview from a perfumer who was saying that the wrist isn't a good place for perfumes, but forgot why. He was favoring more the arm and elbow area, though.
In any case, it could happen that some scents are ok in small doses, but not in big doses. Also, depending on the temperature, the arm may be colder (ie keep the perfume for longer) or too warm (hence going straight to the drydown).
Also, remember that you can also spray clothes, which have a different way of evaporating perfumes and thus may, in certain circumstance, preserve the good aspects of perfumes better.