When you talking slower......can you explain to the OP, what you mean. Is it that much slower it's gonna make you wish you had a SC? Nagh, I don't think so, is it so much slower, you will be left in the rear view mirror of a coupe, nagh,I don't think so,
Unless you can actually notice 0.000000001 of a gnats fart, IMO you are talking cack.
Anyone will be totally happy with the speed of any zed, Noticable difference in acceleration, if it's the same engine in both cars, hmmmmmm, nagh.
Another positive OP, you get 2 cars for the price of 1.