With QT2 the brake torque is still activated for us or we would be just wheeling open open. As we hit the button were just basically telling the jeep how much wheel spin we need to get. At full off there is still a point where the system will kick in and try and stop the wheel from spinning on the QT2. QD2 I think the button has more to do with you guys in 4HI. Remember the QD2 system uses three things to fix wheel spin the brakes, engine power and clutch packs. As you change your setting you get a combination of these things QT2 obviously don't have the clutch packs.