Not sure. Maybe the weight of the car masked the response. My Waja friend also tried my car and he seemed to think that his car is a bit less responsive. His one is not equipped with any bar. It is noticeable that the car doesn't change direction as quickly as a Wira does.I believe its more responsive but the absence of body roll makes u think its not responsive.
Mine is equipped with 2 point strut bar and 4 point front lower bar. Front end is solid like rock and steering is even more responsive and direct.