I just had three guys I know get home from a weekend trip to Illinois, They all got there bucks. They scored, 131, 139 and 141. All big deer.
As for taking a 200lb deer and getting 120lbs of meet is just BS, at least for a whitetail. I have done some volunteering at my local butcher the last few years, except this year, and in my experience you might get a little over half the weight back in meat, not 20lbs.