Cayman S vs. 997 Carrera Comparison (AMS)
The weight difference between both cars was 50 kg only, the 997 Carrera of course being heavier. Nethertheless surprising.
Test results:
0-100 kph
Cayman S: 5.4 seconds
997 Carrera: 4.9 seconds
0-200 kph
Cayman S: 19.0 seconds
997 Carrera: 17.7 seconds
Handling Performance
ISO-Handling Test
Cayman S: 145.6 kph
997 Carrera: 144.0 kph
Slalom Test (18 m)
Cayman S: 69.0 kph
997 Carrera: 69.2 kph
Braking Performance
100-0 kph: 36 m (both cars, cold and warm brakes)
2 m shorter braking distance from 190-0 kph for the Cayman S, apparently the advantage of the PCCB brake.
Both cars have been tested without the sport chrono package.
According to AMS, the Cayman S is a bit more trickier to drive when the PSM is turned off due to the mid engine setup. The 997 Carrera understeers a little bit more but has less traction problems than the Cayman S.
The Carrera is also more forgiving at the limit, offering a wider "safety range" than the Cayman S, of course we're talking about driving with PSM off.
AMS also seems to like the steering feel on the Cayman S better than on the 997 Carrera, the 997 Carrera feels a little bit less direct, probably due to the 19'' wheels.
I tried to extract the most important information without making any comments. Since we will post our own review soon, I didn't want to give away too much. Overall we have to agree with what AMS said.
Since it was a comparison review, the Cayman S won.
For the price of the Cayman S, you get almost 997 Carrera performance, AMS calls the Cayman S a "Cannibal".

More things to discuss as soon as we put our review online this weekend. Happy argueing.

However good the Cayman is, and I am sure it IS good, it will always be seen as a poorer man's 911. And it is. And I speak as a Boxster owner, not a 911 owner.