An even bigger difference between those trailers is that the two-cylinder one is a "direct push" type, and the second one appears to be a "scissors lift".
As it was explained to me, the scissors lift type will not spontaneously raise if a heavy load is placed in the rear of the trailer (as when driving a tractor into it for transport), while the direct push type must somehow be restrained from lifting, or the weight in the rear will cause the front to rise.
The direct push type are less costly, but less versatile.
I have a single cylinder, direct push type, and so far, so good. While it is true that the single cylinder twists the box if the load is not centered, there are other reasons to center the load. If the load is not centered, the tires on one side will be overloaded, and the trailer will tend to move to the side when braking hard. Increasing the number of cylinders does nothing to change this issue.
If I load the trailer, the load is centered. If I am picking up a load of gravel at a quarry, most operators are very good at centering the load. If not, there is always a place to park and distribute the load properly. You would be amazed at how fast a concrete hoe does this work with sand or gravel. It doesn't have to be perfect, just good enough. The poor emergency handling of an off center load is an excellent reason to center your load no matter how many cylinders you have.