Throttle position gauge in OBDeleven

Just got an OBDeleven dongle for my MY18 Arteon (with Stage 1 APR tune).

In the Gauges section there are various throttle gauges (absolute throttle position E, accelerator pedal position D, relative throttle etc), not sure what they all mean... but they all seem to max out at 67%, except for (I think) Relative Throttle which goes up to 86% briefly under kickdown.

Is that normal? If so, dare I ask why it doesn't open fully...?? Is the APR tune doing that? Would a throttle controller get it fully open?

Any info appreciated...

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