The test changes some over time, and the toilets may not be retested, so they extrapolate (I'm not sure on this). But, from personal experience, the MAP scores are somewhat artificial, but the good thing is that they are repeatable. They flush plastic wrapped, nice and smooth, paste sausages...not all that similar to the real thing.
My mother has two Drakes, one ADA height, one 'normal', both elongated. They are nearly impossible to clog unless you are one of the small minority that has a medical problem that produces long, hard logs. FOr them, they may want to look at one of the Caroma brand toilets.
Elongated is much more male friendly, the height, if you cater to older people, the ADA version is nicer. The taller the toilet and tank, the further the water has to fall, the greater the flush ability, all things being equal (but that's nearly never so!). ANy of them should work okay for you.