Hey Alan,
They look similar but they are different, My links lay over and don't travel like yours would at a more vertical layout.
I get more wheel travel than I need now for my susp geometry, camber gains, R/C's and all that stuff.
On the rockers if you look close (the black strip under the alum on the bottom of the rocker) the bracket that link the sway bar doubles as well a doubler...LOL it is tied to all three holes.
The rockers are mounted in double shear instead of single.
Just two different approaches to the same issues I guess
PooK