I haven't ever seen a Simplicity Sunrunner/FCH16 rebadged as a MF either. Although It may be during the time the Simplicity Sunstar tractor was rebadged as a Massey Ferguson 2920H as well.
I drove a Simplicity Sunrunner because I thought they were cool. After driving it, no thanks! I passed on it. Very tippy and lack of traction and steering stability on a hill. The back end would swing around so fast and if you weren't always super careful, it seems like it would wack whatever it comes close to. I ended up finding a super cheap John Deere F510 instead a few years later.