[Power Surge]

Your post made my head hurt.

What is your actual question?

If it's about the affects of different gears for a chassis dyno, I think it's pretty simple. Any type of gear reduction, will show lower numbers, because it takes less engine hp to move the inertia mass (the dyno roller) because the gear reduction "assists" it. For an accurate power reading, you want to dyno in whatever gear is closest to 1:1 because that's your true power output of the motor through all the driveline. If you have an automatic car, you want 1:1 with the converter locked to eliminate all slip/gear reduction.