There is more to a tune than just WOT power, although this unfortunately seems to be everyones focus.
I disagree that all tunes are the same. It's like saying that HP, Dell, and IBM computers are the same, or Quickbooks and Quicken are the same.
There are MANY variances between tunes on vanos changes, part throttle ignition and fueling, throttle body opening and response, torque management, full throttle ignition strategy, etc.. I'm sure a lot of them share certain things in common.
Most people are happy with the software they have. On the flip side, I don't think people who switched would be happy if they spent $1000 and there was no difference in driveability/performance/features, etc..
Carl, Paul, and Vinnie, I'm glad you guys are enjoying the software.