lower control arm 1972 Duster

No marketing koolaid here. Independent of any aftermarket companies efforts and without seeing what others have done I found extreme slop in some arms I was rebuilding. Upon further investigation of those arms I discovered that they were basically put together in a haphazard manner. In reducing the slop the arms felt better. Again, I don't have any improvement numbers, but cannot see any reason to not tighten the arms up.
Jim , I have no real bone to pick with your upgrades, mainly because you are making no unsubstantiated claims here.
Additionally you bringing back to life some severely beaten on or haphazardly built LCA's has no downside as you allude to.
Those calling this mod the holy grail without qualification gets my attention.