The power/speed/cadence numbers comes from the trainers, but I don't think cadence is really relevant here. 400 watt is 400 watt. But as you say, the curves are yet an indication of what we already know now: that the BKool Pro's resistance kicks in late.
Only that if it was done in the same gear throughout your cadence would be directly proportional to your speed and having that second graph to confirm the speed would just leave the watts in question.
However if we assume the speed is correct then you are right in that we should ignore the cadence.
What the Tacx Trainer is showing is pretty logical. The watts are required for accleration until the speed flat lines however with BKool the Firmware allows you to accelerate too freely and exceed the flat line speed.
We talked alot about the on/off style and your graphs seem to confirm the ability for BKool users to generate unusual speeds for a given effort but if you try to sustain that effort the resistance will increase (to what it should be) and pull your speed back down.
However if you deliberately drop your speed you avoid the onset of resistance and so save energy which you can then expend accelerating to a falsely acheived high speed again.
Result = higher average speed for a lower average watts (and probably much lower than actual).
The area under the power graph is your total effort so using the on/off method you can go faster for longer for less.
I am part guilty of this as well as I try and sustain a constant speed on descents and the levels but power into the climbs in order to try and keep my overall speed constant, dependant on the slope of course.
My up down up down exercise shows that if you power on before the climb you can also gain some additional but perhaps for the same reason.
Goat #1 was not great for me; didn't do well for some reason.
. I'm half expecting to get an email tonight saying " you have been beaten by Adski on "Sitka to north end of the road" by 1 second". 
Even though I've been training hard for a while now I wouldn't be surprised if you don't catch up again within a ridiculously short time. You do realise that you've blown my image here as Sensible Administrator right out of the water, although by admitting to doing the Puffer I've kind of done that myself. Anyway, now that all hell's going to be breaking loose in this forum, don't worry, I won't be going easy on you either on or off track.
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. Suffice to say, I've been very lucky.
