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It certainly says something about the driver of the Porsche. But the dual-motor Model S holds the road like it's on rails. Given drivers of equal skill, the Model S is much more stable. I got to drive a P85D Model S once, and that's why I'm going to wait for the dual-motor Model 3 rather than taking the single-motor.
Driver error is less likely to cause a spin-out in an AWD Tesla than in a RWD Porsche. There's nothing "wrong" with the Porsche, but the Tesla is easier to control. You need more skill to drive the Porsche.