Originally Posted by bruce.augenstein@comcast.
I disagree completely. The ideal shift point is where the power being produced at the wheels after the shift is identical to the power being produced at the shift point. Thus, you want to shift at a point well above the power peak. In the examples shown, you can't get to the ideal shift point, so red line is the best you can do.
Maybe Audis are different because every single one I have owned accelerate as quickly if not quicker when shift occurs at peak power, revving the extra 500rpm has not benefit what so ever.
You want to be shifting into that thick torque band and until your torque is also far up the rev range then there is no benefit holding on to the gear.
I can only gauge from experience and that is what I have found on every occasion.