From the name of an old design company. (Just like Ford did in the 70's by using the name "Ghia" on their top of the line models. So not a new idea...)
The Fusion is still one of the very best looking sedan available, and it still looks great with mode chrome/detailing.
There is no Taurus or Lincoln in Europe. So the Mondeo is the top sedan. Which leaves room for a luxury version.
Not the case here in the US. Where the Fusion is squeezed under the Taurus.
By the way, it looks fantastic as a hatchback (pictured above). And the wagon isn't bad either...