Torque Ratio for Downshift - what is the ratio of?

[WS6FirebirdTA00]

I am trying to tweak the downshift timing tables, but I don't know exactly what the torque ratio is on the left axis.

Can anyone help? Numbers range from 0.10 to 0.88. I really am trying to figure out for hard downshifts at high throttle, would it be at a low ratio (near zero) or high (near 1)?

I could only assume it is a ratio of current torque vs. demand torque. In that case, the higher the separation, the lower the number.

[tune2mbt]

Maybe log the current vs demand and see where the numbers fall?

[WS6FirebirdTA00]

Nothing seems to make sense other than driver demand torque % at this point. I asked support, we will see if they can answer.