They might use different subframes. I don't think they do but it's possible. If you can't find the answer you could measure between the subframe attachment points on the two tractors.
if hat is the older model (pre 2014 model) it will not fit the subframes are different, how ever if that is a 4720 made after 2014 it should fit without issue. But i'm going to be in a meeting with Branson Later today anyway so i will ask them. So i spoke with BRanson about this they said it will not fir on the pre 2016 models but it should fit on those made after 2016