There are three runs and the cars are fairly evenly matched although the edge goes to the SLS which is able to pull in each race. Even in the third run when the 458 gets a slight jump the SLS is able to pull slightly past. It's close, but surprisingly the SLS takes it.
There are test numbers out there showing the Ferrari running close to high 10's @ almost 130 miles per hour. Just goes to show Ferrari might send ringers as they have been known to skew numbers in tests in their favor. Car and Driver got 11.6@126 for the SLS in the 1/4 mile versus 11.5@128 for the 458 Italia.
What could explain this? The SLS is likely stronger from a roll than it is from a stop and the 458 gets a benefit in the 1/4 mile due to its weight plus mid-engine layout and launch control providing a better start from a stop.
Simply an excellent video courtesy of user @AWD75 and it sheds some light on a very controversial video posted previously of a claimed "stock" SLS AMG versus a 458 Italia. In that video, the SLS crushes the 458 Italia and the conclusion was that the SLS could not be stock. With this video as support, this network stands by that previous claim. The previous video has since been set to private.