I'll give this another direction!
I submit there's no difference between "low horsepower" and "high horsepower" cars in terms of driving talent.
My theory is that a lot of people THINK the throttle (and usually the brake) is fairly binary in low horsepower cars (brakes because the cars are also usually light) because they can be pretty binary with them and be within a few tenths of the "really fast guys" and then they just assume that since they're running the same line, braking at the same place, etc, and that guy is still pulling them off the corner a bit, that the "really fast guys" are cheating or just have better prep.
The problem, obviously, is that they are wrong. The throttle is not binary, nor are the brakes. They don't understand things like trail brake by TURNING and not by applying the pedal. They don't understand that there actually is a time, even in a lowly no horsepower POS like a SM that it is okay to briefly be "coasting". They don't understand that if you can whap the throttle right here, you could have been rolling into it five feet earlier. And thus they really don't fully "get it." (And part of the problem with that is that coaching at most levels tells you, particularly in low horsepower cars that you're never coasting, that corners are almost all "regular" and can be treated as such, and a myriad of other things you must finally unlearn once you get fairly adept at the basics to finish getting really fast. I'm not there yet, and may never be.)
Once you master this, then moving to higher horsepower stuff is simply different amounts of gradual throttle. Sure, the penalties for overdoing it can be greater, and this is why you often see larger time spreads between the guys in the high horsepower cars than the low. Braking errors are usually magnified, too, since the high horsepower cars are typically heavier. But I submit that the truly talented high horsepower drivers can often jump into low horsepower stuff and be REALLY REALLY good REALLY quickly.
Leh Keen, Farnbacher Rolex GT driver and my One Lap partner this past year, showed me that. The guy has no serious karting experience and very little low horsepower experience, either. He jumped into my own gokarts and within a session was whipping the shit out of a bunch of people that are pretty fast in those things with a lot of experience. I feel like I know why, but I also know it's going to take a lot more experience on my own to replicate what he was doing. Don Knowles, more what I'd call a low horsepower guy in terms of experience (though he's certainly got more high horsepower experience that I'll ever have of ANY kind), took five sessions before he was what I'd call "good" at the track. And yet Leh was simply better somehow. And Leh outweighs Don I'd guess by 30 pounds and is REALLY tall.
This debate could get good. Another reason we need a forum software update is so we can get a popcorn emoticon.
--Donnie