Nobody even needs to watch the comparison to realize the F10 M5 will smash the GTS in acceleration once the all wheel drive advantage is mitigated after the launch. On the top end, from a roll, whatever, the M5 is going to smack the Panamera GTS around. The video's drag race shows this clearly as the Panamera gets a jump only for the M5 to quickly reel it in an pull away easily. The 1/4 mile times had to be done in extreme heat as the M5 only hits 12.4@114 compared to the GTS 12.7@107.
The Panamera GTS price comes out to $146,250. The M5 is $104,295. At the price point of the GTS a Panamera Turbo really should just be used for this comparison. The GTS has a dual clutch transmission and V8 just like the M5 but the problem is that it is missing the two turbos.
Ok, well, the cars are about more than power. What about the engine sound? Well, they prefer the Panamera GTS which is no surprise. What about the handling? The GTS is more sure footed and offers more feedback.
The best thing about the comparison is the comment that the M5 has become a hammer instead of a chisel. When its weight is about the same as all wheel drive competitors and it needs to pipe in fake engine noise to keep the owner engrossed in the driving experience, something is wrong. The M5 is now more about brute force rather than finesse.
This had the potential to be a great comparison but without the Panamera Turbo, it misses the mark.