Thats true. The new highly adaptive ECU's can end up fighting the tuner if he doesn't understand how the ECU code makes decisions.
There is something to be said for the good old fashioned distributor ignitions. Set the base timing. set the rpm you have full advance and maybe retard a couple degrees in the traps. What is really interesting is a well tuned distributor ignition give up very little power to a modern EFI system at WOT.
Larry