Lots of well-informed comments here. I am a mechanical engineer ( My BS was in 1966 and MS in 1971) but I do not claim to possess all of the worlds knowledge. In fact, over the years, I am always amazed at how much I do not know.
Just before I bought my recent trailer to be towed with a Ram 1500 Big Horn I came across a fantastic real engineering study. It should be mandatory reading for all trailer owners. Here is the YouTube URL
or you can search on YouTube "Airbags versus Equalizer Hitch."
Before I saw this article, I was debating what airbag system to install. View the channel and I think you will find out what airbag system that I decided to install!
As I said, after 50 years plus of engineering I do not know it all, but I can usually tell when someone is feeding me good information versus BS. This YouTube video saved me money and, more importantly, lots of time as I nearly always do my own labor.