The Fastway (Equal-i-zer) E2 hitch has two points of sway control. Those two points are where the WD bars contact the L brackets on the trailers A frame. The WD bar sockets at the hitch head are free swinging just as in a normal trunnion style hitch.
The Equal-i-zer 4 point hitch has those same two control points (which are secondary) plus the main two control points which are the interface between the WD bar sockets and the underside of the hitch head surface - hence the advertised 4 point control.
So No, the two hitches are not the same and are actually quite different and have different amounts of sway control.
Barney