And what I meant, of course, is with the tires on the pavement.
I was in a hurry....
Any TC, should not break the tires loose at under it's rated stall, else the stall may not be rated right. I mean they start transmitting torque right at idle, just not enough to move the vehicle. But as soon as the rpm rises, and the torque overcomes the "body at rest" then the vehicle begins to move. Once moving, less torque is required to stay moving.
But to break traction, the TC will have to come to, or very near to, a hydraulic lock , which should be very close to it's stall rating.... not the flash stall but the brake-stall rating.
