Dick, these are all power curves in that chart, done with different muffler systems and dyno! Charts like that would not be possible with one single prop. They exactly prove what you stated in the post before that.
These charts are handy to plot your particular prop load in, so at any rpm, you can see the spare power available for spinning up (accellerating) the prop.
DA, 3W and MVVS do not have the sweet spot at such high rpm, so they need longer lengths from piston skirt to reflector cone middle or reflector plate if no cone is present.
Now, Dyno work is one thing, field work will not match that exactly, because the pipe temperature plays a BIG part in the power game. Yet the dyno work leads one to conclusions for where to look for best final setup.