To me and a few other people I know SCT are so popular because they look like the real thing. No big stupid wheels hanging out of the quarter panels. No silly looking spoilers and they have realistic looking wheels and tyres
Lets face it 90% of offroad rc cars look nothing like there motorsport counterpart

IMO there is nothing like a badass V8... then put it in a massive pick up truck... now thats tough... scale it down and u have a rc SCT