Have you ever a ridden modern performance off road bike? You know, something that weighs as much or less than your 230, with 2-3x as much power, and with good suspension and brakes? You are absolutely kidding yourself when you say that a KTM will be left behind if you make the motorcycle the variable and not the rider.
If you enjoy your 18 blistering horses on a gravel and dirt road that's cool, but there is a reason why most people (who can afford it) would rather ride something else.
And before I hear the "too much maintenance" argument again, you need to educate yourself. For a modern 450-570 KTM/Berg a 10 minute oil change every couple of thousand kilometers should really not be a serious factor.