Yeah definitely this mode is retardedly difficult. I'm beating teams purely with defense, I make it 3-2 and everybody is really agressive. They can't get a proper shot at goal and I get shutouts. The challenge though is getting goals and even against rookie teams I still only get, at max, 3 goals.
The challenge is good, but I don't know how my strategy willl go against the pro leagues when I get to that level. Maybe it is something they can fix with a patch.