I just can't understand any difference in a friction hitch being it a equal-i-zer or Reese dual cam
Friction sway hitches attempt to control sway already in progress.
Equal-i-zer, Reese, Blue Ox without the friction sway bar attempt to prevent sway before it starts. Also, you can back up without having to jump out to disconnect the friction bar.
I started out with a friction sway system and upgraded to a Blue Ox. I still feel trucks passing, but not near to the extent that I used to. I used to feel ANY high profile vehicle passing me, including suburbans, explorers, min-vans... anything tall.
Now I only feel semi trucks, and they do not push me into the shoulder.