From a dead stop, or launch is the C4S quicker than the C2S? I would think the C4S would be due to grip from all four wheels.

 

Probably the 4-wheel drive by a tad. What makes a measurable difference is manual vs PDK w/launch control.

 

Here is the list by auto magazines.

https://www.0-60specs.com/porsche-911-0-60-times/

 

Interesting that they have the S as barely faster, even though Porsche themselves lists the opposite.

 

4S is a more expensive and raises the profit margins.

 

Ah yes good point.

 

I've heard the 4S is slightly quicker due to the all wheel drive.

 

I've driven both (own C2S) both are 991.2s. Feel about the same. The C4S is a wee bit slower because it weighs more I heard.

I can tell you mine can do better than the Porsche 3.9, they were very conservative on the numbers this time.