Well, that depends on how you look at it. I know that LR does exactly what any tuner would want a decent ECU to do. It has the right shortcuts, the right layout and this is only as far as the calibration software goes. What it does internally with regards to strategies and algorithms to improve driveability, well, that isn't documented, but i'd be very surprised if Gems could match it (but of course, that is pure speculation).

LR does DBW, just incase i'm misunderstanding what you said above.