A very lengthy analysis with a flawed starting point, rendering it entirely useless. You cannot make such conclusions based on single data points. Using C&D as a reference, the G82 MT is quite faster in acceleration than the F82 MT. When the F82 crosses the 1/4 mile line, the G82 is awhopping ~21m/71ft ahead using those samples.
https://www.caranddriver.com/reviews...ested-review/#
https://www.caranddriver.com/reviews...y-the-numbers/
Different test conditions can lead to rather big discrepancies in the results, this why it is flawed to draw definitive conclusions on a single sample. The correct way to compare empirical results is to average several test samples of each car and compare the averaged results of each car between them.
Further, you are underestmating the weight benefit of the CCB on the G82. It is more in the ~21kg range than the 13kg you quote.