If this was a DCT car, yes absolutely WTFFFF. Its not, it has a clutch with a release point, it jumped when he was letting it out and it stalled. oh well. Those of you who row yourselves know it happens from time to time to even the most experienced.
Now that said on the matter of clutches... You won't gain a thing from the base Focus because it has super light clutch plates because they're gutless, torqueless little things. The Mustang GT has always had a rougher, heavier clutch because of its higher torque, I found the clutch in the Ecoboost Mustang to be quite regular if you will, which I take as a good sign being mated to the same 2.3. Granted the gearbox will be different for the transverse layout of the RS but I think you follow my reasoning?
There are things they can play with to give it a lighter feel, like longer spring fingers, but I'm not sure what tradeoffs that creates (if any)???