The four cylinder is powerfull enough and lighter. The only advantage of the six cylinder is the noise and the fact that it is a six cylinder.
The 6 cylinder is a good engine, smooth and loads of torque that can be transformed into a tiger with throttle. You need to drive the four and the six back to back to see the difference. For me I would have liked a V8 with plenty of cubes... but heh ho.. I would have thought the USA would have preferred the bigger engine if it was available.
