360 Are track biased setups/cars suboptimal for B roads?

This isn't a question of comfort since that's probably more obvious but of chassis control. Is the stock setup of a 360 (and I assume 430) better on B roads with a lot of undulations, dips, roots etc... that can unsettle a car with firm suspension?

I was driving around Mulholland Hwy in the Santa Monica Mountains Saturday morning and was thinking about this while I was driving. There's a few sections where I had to be very careful with the 996 and 997 GT3s (both with Ohlins and set to the softer side) where they'd get unsettled and you'd momentarily be bounced around and maybe not all wheels are touching the ground if you're really booking it. Same road in the 360 and you barely notice how dynamic the road is under the car. I drove a Porsche Spyder RS over the same road and it was similar to the 360 and couldn't get unsettled while also combating chassis roll a lot better.

We have a lot of mountain roads in California that are paved very well and are great for the GT cars (like Angeles and Upper Big Tujunga), but due to our terrain and seismic activity, a lot of the other roads tend to have a lot of variations in the road surfaces. Some of the stuff up in wine country in Norcal is even more extreme that what I've come across in SoCal.

I've been contemplating upgrading the suspension on the 360 to a custom dampered MCS set with B roads in mind but after this weekend I'm not so sure about that. I'd like a little less chassis roll on the good roads so maybe just doing bushings and CS ARB is all I need. Which leads to the question: are the track focused cars (like the Porsche GT3s) suboptimal for these types of roads or are some of them still well suited for it? Where do the 360 CS and 430 Scud fit in to the mix?