MAP testing has its place, but isn't a true indication of how well a toilet operates. The real stuff isn't plastic wrapped paste, which is what the MAP test uses. The designer of that test says anything over 500g is fine. The two-piece units are taller, so the water falls further, thus faster, so they tend to have higher scores.
No idea on that toilet. The bigger thing is if it uses proprietary parts...no guarantee you'll be able to find them when needed, which you will eventually. Another thing the MAP tests don't tell you is whether they splash your butt while seated (or the seat afterwards), and how well they handle skid marks.