Both internal and external martial arts are in total agreement that the ultimate result of training is a quality of movement. In fact the word gongfu could easily be translated: great movement quality.
The difference between the two is that external martial artists pursue the perfect technique with the intent of utilizing or implementing that technique. Where as, the internal martial arts practitioner learns technique so that it can't be used against him/her.
For the internal martial artist this familiarity with technique, this ability to sense and then neutralize an attack, is not just sensitivity--It is deep kinesthetic knowledge.