A few years ago,my wife and I were driving by a guy mowing on a larger CUT one size bigger than the one I had at the time, so we stopped to watch him work because I was thinking about getting the same exact mower he had (Woods RD90). He was literally using it to bush hog the field. It was standing field grass that was about 4' tall or more, and very thick. He was cutting it down alright with the CUT, and at a good rate of speed, but he was leaving a lot standing too. That mower has swinging blades like a bush hog even though it is designed as a finish mower. While the cut he was going for wasn't anything more than to knock the field down to around 6", he had to double cut the entire field to do it because there was just too much material for the deck to process in one pass. It was interesting to watch though. Looked just like he had used a MoCo to do it when he was done.
I'd think that as long as that Hustler has the cahones to run it, it would work just as well.