Some weight distributing hitches provide additional attachment points. The Equal-i-zer doesn't.
If the trailer were to be separated from the tow vehicle, the weight bars would just slide right out of the saddles.
We never use weight distributing hitches on 7,000# GVW car trailers, cargo trailers, and utility trailers, but we do use weight distributing hitches on 14,000# cargo trailers.
It is about front axle weight. On car trailers, you can move the car forward or back to get the balance right. On cargo trailers you can load it with the weight from the front to the axles. With 1,000# or more tongue weight the rear of the tow vehicle squats down and the front is in the air- less steering control and headlights blinding other drivers. The idea is to transfer weight to the front axle and trailer axles leveling the entire combination and bringing back steering and braking control and safety.
With 350# tongue weight these situations will never come into play.
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
WBCCI #1811, Region 6, Unit 56