I agree, a/c performance seems to vary. For me, especially during the first 10 mins of a 110F outside temp heatsoaked cabin or when the sun is blasting directly in the front windshield. I live in an extreme climate and at times it takes too long to cool the cabin down even with the fix and ceramic tint. I hope some initial heat soaks will go away once I finish modifying the garage so it can be parked in doors. In the mean time...
I'm wondering if the a/c performance issues are also related to the way the air flows out from the new cabin vents. I haven't driven a classic 1500 but the new body 1500 cabin vents seem to output a tight vertical sliver of forced cooled air resulting in the need to move vents to cover body parts when the sun is blasting in the front or side windows. In contrast, my wife's car feels more like a blanket of cold air across the front seats even when the cabin is recovering from an initial high temp heat soak.
A/c systems need to be designed for the worst conditions and shouldn't see large drop offs in performance from one model year to the next. Something doesn't add up.