KresoF1:
Markus, SLS Doettinger Hoehe top speed is 284km/h(from SA Supertest). HHR time is 1.10,8min. For comparison 997.2 Turbo PDK Coupe HHR time is 1.11,9min... And I know for the fact that Turbo S is not any faster on HHR.
Good point 284 for sls and 293 for gt2, 295 for 458 and probably 300 for gt2 rs
as well the sls engine can still be tuned by moderat works so in fact is possible to run it with more than 570 hp by factory and yes i dont believe the times you said, as well evo had the sls up to 160 miles with 22 secs witch is compared to the turbo s 19,7 secs and the 458 17,xxx secs pretty slow and in the range off the ligther r8v10..
Otherways to mentiond the nardo and papenburg test of the sls was up to 200 kmh almost identique just from 200 kmh up to 300 kmh was a difference of 6-7 secs....
So mercedes makes quick car, but otheres apperentyl quicker.