2/2005 (SL65)

0-100km/h 4.3 s
0-160km/h 8,8 s
0-200km/h 13,1 s

Elasticity 4/5 gear
80-100km/h 2,7 / 5,2 s
80-120km/h 4,7 / 8,0 s
80-140km/h 6,7 / 10,5 s
80-160km/h 8,8 / 13,1 s
80-180km/h 10,9 / 16,1 s

Slalom 63,2km/h
36 meter slalom 120km/h
Evasive Course 110 meter 127km/h

0-200-0km/h 18,5 s
G-power 1,1 g

Nordschleife 8.14 min (reached a topspeed of 279km/h)
Hockenheim 1.15,6 min

Total score (they also presented the score for some other cars) :

Carrera GT 68 p
BMW M5 50 p
Aston Martin DB9 48 p
SL55 AMG 46 p
SL65 43 p

4/2002 (SL55)

0-100km/h 4.3 s
0-160km/h 9,4 s
0-200km/h 13,8 s

Elasticity 4/5 gear
80-100km/h 2,8 / 3,8 s
80-120km/h 5,4 / 7,3 s
80-160km/h 10,4 / 14,0 s
80-180km/h 13,1 / 17,5 s

36 meter slalom 124km/h
Evasive Course 110 meter 133km/h

0-200-0km/h 19,1 s
G-power 1,15 g

Nordschleife 8.12 min
Hockenheim 1.18,4 min

As I understand it, the 12-cylinder engine is the reason why SL65 is slower than SL55 around Nordschleife but I dont got it why SL65 is faster than SL55 around Hockenheim.

Sportauto also drove SL55 a second time around Nordschleife (then without a speedlimit and chassi-modification) then SL55 did it in 8.06 min. After the supertest of SL55 they driven around hockenheim two more times(from two different tests) the best result was 1.15,9 min.

I dont see why I would buy a SL65 over a SL55, with small modifications the SL55 is faster than SL65 around Nordschleife, except for Hockenheim (but the difference isnt huge).

I know laptimes and acceleration times are depending of several things. But please enlighten me, why is SL65 a better buy than SL55?