CW:
Have a look at the cutting surfaces. Both kinds of tools use indexable carbide cutters, sourced primarily from the metalworking industry (or using the disposable carbide cutters found in some planer-jointer spiral cutting heads), that are attached to variously formed tool shanks. This is where the similarity ends. The Easywood Tools are used primarily in a scraping mode, mostly at center line, with the shank held horizontally. In contrast, the round, polished carbide cutters on Hunter tools are used in a shear-cutting mode, in some cases with the bevel rubbing. Both will remove wood, and both can be fairly efficient cutters when used well; the techniques used differ substantially between them, particularly how the cutter is presented to the wood.
There are youtube videos on-line which show both kinds of tools in action so you can compare them visually. Hopefully at some point you can compare them physically to see and feel the differences and similarities in how they cut, and the quality of the surfaces they leave on the wood.
Rob Wallace