We like Lincoln's new design language; that big winged grille looks good on the midsize MKZ. But the car struggles to separate itself significantly from its platform-mates: the Ford Fusion and Mercury Milan. Its interior is generally nicer, but some control surfaces come from a common parts bin. The ride quality doesn't feel that much better than its lower-priced siblings. And much of the cabin tech, although excellent, is the same as you can get in the Fusion and Milan. This comparison leads us to ask, what makes a Lincoln a Lincoln? And does the MKZ have that quality?