Ok Lets seperate Reality from Fiction..

RC Drift: AWD is King

Real Time Drift/PS2/Xbox Game : All Formats can Drift... FF in real Life can be drifted but it takes way more skill to do.
RWD is Way Easiest to drift in Real life ... Just not in RC...

AWD is Neededn to control the slide, Front wheels Pull the Car in the Direction of the Slide while the Rear Wheels try to push the Back Wheels past the front Tyres..

In a RC RWD car there is nothing stoping the back wheels from pushing past the front resulting in a Spin... RC Drifting takes Skill, Tailing out is a different matter altogether..