Thats right Joe!
The other typical problem with American deck design is because they are designed to cut high, they dont have a cutout at the front of the mower. The blade at the front generally misses because the front of the deck "pushes" the grass down and the blade runs over the top of it!
These American units then cut at the 'back' of the deck, the blade has to push the grass all the way around from the 6 o'clock position, thru to 2 o'clock
Australian units with the cutout at the front of the deck allow the grass to be standing when cut, thus allowing the grass to be cut when the blade is at 11 o'clock and saves alot of horsepower