This is good stuff - great see someone do their homework to help make decisions for the desired outcome.

To me the graph is a bit mixed up when following the X axis (shaft speed). Starts at zero rebound, gets faster (OK) then suddenly switches to zero compression speed (which it physically can't do). The data points joining between fast rebound and slow compression (the middle part/cross over) will be incorrect. Reversing the first part of the X axis (to indicate direction and speed) would make more sense IMO

What you can see though clearly (still) is that:
1. Fronts provide more damping (to match higher spring rate, and more weight)
2. Damping effect increases at a rate higher than the shaft speed (non linear)

It is generally acknowledged that compression rates have a greater effect on ride quality, while rebound does most of the work in controlling body movements. In terms of deciding if the Spoons are a better option than Konis though - without comparative data it doesn't help much - other than the fact that you've learnt a something (which is worth it by itself).

Yes, Spoon have optimised their products to work together (on day 1 at least) - and have spent a lot doing so.

However the adjust-ability in the Konis is hard to pass up - as all dampers (shocks) go off over time. Adjusting to personal preferences (or even for conditions) is attractive as well.