I take these with a grain of salt seeing as motor trend has had a hard on for the vette since forever and tends to crap on anything not american when they do their comparison tests. Everyone else who does these will show different results including a faster 1/4 for the LFA vs the GTR and the Ferrari or McClaren leaving a "Z06" in the dust. Obviously a real Z06 doesn't cost over 100k and theirs has an option package. You cant do a comparison with cars using option packages vs cars that aren't. All it does is take any legitimacy away from the test.
If they really wanted to use option packages across the board then you would see much different results. This entire thing should have been done with the base cars with no special option for example using a regular Z06 and getting rid of the black edition GTR.