I haven't looked at any of the newer Detroit Locker styles in recent years but back in the day, a Detroit locker worked by keeping both axles locked together unless one of them wanted to turn faster as in the outside wheel in a turn. In that case the faster turning axle is disengaged. So in other words, the locker is always driving the slower turning axle. When they are the same speed then they are both "Slower" so it turns both. This is what causes the weird handling on the street. If you turn left it unlocks the outer wheel which sends all the power to the inside slower wheel which, in effect, causes the car to try and resist the turn. Hence why they were not popular on the street for turning.