I looked and to me the Steadyfast system seemed better engineered.
Its has fewer bars (only 3) but they are much longer and all attach to either the Frame or to a Special Jack Pad.
I'm sure most of the systems work, and few of us have ever tried the other brand to compare with an unbiased view.
2016 Jayco White Hawk 32DSBH pulled by 2014 Chevy
Gone-2013 Keystone Bullet 294BHS
Gone-2007 National SurfSide 34DE
Gone-2006 ForestRiver Sunseeker 2900LTD
Gone-1994 Fleetwood PaceArrow
Gone-1978 Kit RoadRanger