Well, I'll stipulate that they have a good reputation but IMO it's more due to good marketing than to the street cars being anything really exceptional. For example, the 911 design with that engine hung behind the rear axle derives from the VW beetle. It is not something a car designer starting with a blank sheet of paper would ever draw. But they invested a lot of marketing money, including doing a lot of racing, and built an image. One of the cliche 911racing images has a front view of a car storming through a corner with the inside front wheel lifted off the track surface. That's because there is a humongous front anti-roll (aka "sway") bar needed to reduce the adhesion of the front to balance the poor adhesion at the back due to the far aft CG. AFIK no serious Porsche race car ever used the rear engine design. Definitely nothing from the 904 (my dream car) forward. So the current cars benefit from the marketing legacy but they also, I'm sure, handle well.
Porsche also benefited from weak competition in the US market. The pony cars all featured oxcart (solid rear axle) suspensions. The Corvette suspensions were better but the cars were/are too heavy to really be a sports car. (I know, I know, some people will vehemently disagree.) Lotus had the Elan, which handled like a dream but was seriously compromised as a daily driver. The Lotus Seven and Europa were even less useful, but any of the three would blow a 911 into the weeds on a twisty course. Alfa was around for a while in the 70s, but with a hopelessly uncompetitive DeDion rear axle design.
Finally, even if there is a tiny advantage it will be invisible in a street car because they are driven at the limit only accidentally. A Good Thing, too, as being at the limit on the street is dangerous for many reasons. So ... no, I don't think the Porsches are anything special compared to other modern cars that are designed with similar objectives.
