Does the Impact Sensor take into account the angle of impact to calculate values like Bump?

I'm punching a target using Move controllers and it's giving weird Bump values in relation to Velocity (like low Velocity punches having much higher Bump values than very high Velocity punches)

I don't know if that's my bug (it's a simple construct though, and the original creation is Tapgiles), MM's bug, or it's explained by my hand not hitting the target sculpt/sensor at the same angle all the time. But that last one could only be the explanation if the sensor takes angle into consideration