I don't have any particular information about DPA microphones but in general, whenever there's a difference in sensitivity between two related types where the acoustical design is the same, be sure to look for possible effects on maximum sound pressure level and/or inherent noise level. Those parameters are nearly always interrelated.
Increased sensitivity without a corresponding increase in the maximum output voltage, for example, implies a lower maximum SPL; reduced sensitivity, on the other hand, generally (though not always) implies a higher equivalent noise level.
--best regards