Well...
You think a YZF R125 would beat a RS 125?
Have you ridden either?
A RS does sitting normally on part throttle what these new four strokes do flat on tank, downhill, drafting a taxi.
That was with my younger, smaller, lighter brother on the CBR !!
And it goes round corners quicker, although that is mainly cause it is faster, rather than any deficiency on the CBR's part...
The only problem the RS has is its so much better, more grip, more power, more fuel consumption, oil is really expensive, and according to my brother, it looks too much like a GP bike.
(He still hasn't quite clocked what a RS 125 is yet.)
The RS doesn't deserve its reputation, neither does the Mito. They just aren't looked after by 17 year olds who think maintenance is wiping a cloth over it once a year, and thats where the problems are.
The oil NEEDS to be Race grade fully sythetic oil. Less than that is asking for trouble, for a start. And let it warm up for crying out loud. put your gear on after you start the engine, then it has a chance if you must ride straight away.
That said, Aprilia reckon that the markets going four stroke anyway, and you can't exactly say what do they know...
Anyone with a brain cell wants a two stroke.
An RS will leave a GSX-R 600 behind on a twisty road. I know that from experience - The GSX-R rider was not happy.
The only real problems the 2T's had was emissions, that is what really killed them - not just silly 17 year old thinking new is better, which didn't help.
Most 17 year olds would rather a '11 plate YZF R125 than a S plate TZR, purely cause its newer, and therefore more impressive. The fact it is some 30+ mph slower doesn't come into it...