And are you talking about peak power or average power gains???
If you can't make an xhp gain at the peak (or top end), you can't realistically make a xhp average gain.
Unless you have a very strange definition of average, or you are splitting the curve up into broad sections.
Or you mean % gain.
EDIT: I'm not saying you are wrong in principle. I actually agree with you that it's the curve that matters rather than a peak figure. But high peak figures allow for much willy waving.
You want the most power, where you use power. Which for most people is sub 3000rpm.
Thats the way I think and its how I market my remaps
Do you want good, usable power across the rev range or a million BHP over the last 500rpm?
Peak bhp doesnt necessarily make for the quicker car
That Corsa I did the other week, the bloke could feel the difference in the first 3 gears within just a few hundred yards
Again like a few others have said a remap done properly makes for a much nicer drive