All bikes these days need an ECU tune, its just the way it is. If the Gixxer offered everything the BWW does I would buy one.I'm not. I bought a new Gixxer 1k-R instead.
BMW is not getting my money until I can get a black bike with a proper tune, from BMW, even if it's a BMW "off road" tune installed by their dealer, free of charge, that retains the factory warranty.
Still waiting with cash in hand.....