Okay, now I am understanding it better. I like Jeremiah's comments about the DC being proactive.
I have not had a friction only based sway control before like the Equalizer. I have to think there is quite a difference in the "feel" of them. You could be in say a 45 degree turn with an Equalizer and there isn't a self-centering action and you need to return it to a straight line manually (for lack of a better word). I have to wonder what the feel of an Equalizer is like as you travel down a very gusty road and you still need to make corrective measures. For anyone who has hands on experience with the two, what is the difference in the feel between the two?
Also, is there any real difference in the Equalizer and the add-on friction sway control? Is the only benefit to the Equalizer fewer parts and quicker setup?
Have been looking around our cg here this weekend and have not seen anyone with a DC but have seen a few Equalizers. Also a few long trailers with no sway control.