At the risk of sounding like a chav

Are these cars not that impressive in a straight line? My friend had a play with one in a Focus ST (standard) and wasn't any slower than the RS?

Now i know there are many factors - RS dude can't drive etc etc, but has anyone actually been in one? one thats had a few miles done so its loosened up a bit?

Asking because i'm toying with the idea of getting one at some point.