Hi there
This is a hard one.
Acceleration wise its easily a win for the Mustang. 0-100mph in sub 8s with a good launch.
Top speed wise, well if you were daring enough the Saleens and Saleen do say they are capable of 200mph when pushing past 500BHP, but I doubt this claim, I've done 165mph and even though it felt rock solid on the road there were vibrations becoming apparrent.
So I'd say the CSL, people say they are good for around 180ish and I don't doubt it as I did close to 160ish indicated in mine and it was not breaking a sweat.
Other reasonably quick car was the modded R34 GTR Vspec I had for a month.
For me its all about acceleration, anything past 140mph is not really needed so its more down to how quick it gets there and on the roll acceleration and when it comes to on the roll acceleration there is not much that can keep anywhere near the Mustang apart from other modded cars, bikes or cars costing a lot of money.