Sorry, but you can't compare those two aircrafts like this. The Caravan is a "van", as it's name already says, an aircraft made for transport out of bad runways, loading quite a bunch of stuff. It's a kind of modern bush plane, although used and advertised also in other segments. It's speed of roughly 160 kts and the lack of a pressurized cabin makes it for me hard to compare with the PC
-12 on the other hand - although working well from short and bad runways and having a flexible cabin as well - is a much more luxurious and faster plane. It's pressurized cabin takes the passengers well above the weather and will let them make the destination rather quick, even if it's far, as it's speed of 260 - 280 Kts isn't to bad either. For sure, this plane is in another class and costs more money.
If you like to compare the PC
-12, I wold suggest doing it with the Beech 200 or Cessna's CJ
1. If there is a Pilatus product to be compared with the Caravan, I would say, it's the PC
-6, the so called Pilatus Porter. While the Caravan is your "Truck", the PC
-12 is more the Limo.