What is the twin-link four bar suspension designs trying to solve? In another answer on suspension spring load calculations, @Criggie provided some examples of different suspension designs, 1) the standard four-bar, and 2) the twin-link four-bar:




Clearly there second has a more complicated linkage, but what is the twin-link four-bar suspension design trying to solve? 

The twin-link seems to have a bigger virtual pivot point and the magnified axle path seems to swerve less laterally, but it's hard to tell from the exaggerated diagram.
The images originally came from the following 
article:

An updated article was released last year with a mountain of information about
suspension designs:

I suspect the twin link system was a way to circumnavigate the patent on the Horst link whilst providing similar suspension performance.