Car engines don't tend to be that picky across brands. I've never heard of guys with Traxxas engines having to tune them differently from how one would tune a Picco, again differently from a CEN, etc etc. They're all tuned the same. Maybe it's because the carbs in use on the surface are so similar? There's two, slide and rotary, and they both have the same needles in the same location doing the same task. Conversely, there's a huge variance in the types of carbs used in aircraft compared to the types used on the ground, that may account for certain brands preferring certain methods.