Pilatus PC-12 (source: www.what2fly.com)
King Air C90 (source: www.ok-aircraft.cz)
I am wondering this because of the blades on the propellers on both of the planes. The Pilatus PC-12 can travel up to 360mph with its 4 blades on the propeller. The King Air C90 has 2 engines with 4 blades each, is around the same size and can travel at a slower speed of just 300mph. Why is this when the King Air has 2 engines instead of 1 with 4 blades and travels slower, and the Pilatus only needs one engine with 4 blades to go 360mph?