No, its the person that is doing the tuning and the software they use to create the tune that is going to determine if one is better than the other. The NGauge, SCT, Cobb, Diablosport, etc. hand held devices are just a tool to down load the tune file to the car. They each have pluses and minuses and you will need to decide what is important and what isn't.
The best recommendation is pick the tuner and use the device they create tune files for.