Kalkwasser can’t really be compared to either Triton or the zeovit system. In many cases dosing just kalk will not provide sufficient alk or calcium for corals. Also the other two methods rely on nutrients and etc. in addition to the 2part dosing.
The two can be compared to other 2-part+ Dosing methods like balling or aqua forest.
If you search the forum you’ll find good info on both and more.