Beaglebuddy said..
What is the difference between the toilet designs? I have heard reference to ours having a larger water spot.
Yours fill half way or more with water, and rely on a vortex (cyclone) effect to suck solids down.
Ours fill only a tiny area at the bottom in comparison, just large enough normally to cover what you drop in there. Then they rely on water flow, rushing down the sides of the bowl, to wash solids down.
All evidence says the water flow action both is more effective and uses less water. And doesn't wet your junk or risk floaters touching it.