Then maybe you can explain why it is that I have a stock clutch with nearly 100K on it with duals and lockers without slippage of any kind.

When you shift gears, everything in front of the component where the gear shift took place has a reduced torque load on it. Everything after the component where the gear shift took place has an increased torque load.

If your thinking is true then you should have no trouble taking off in 5th gear and not even smoke your clutch.