I actually like the Chevy Impala. I really like the changes they made for this year's model, since it looks more luxurious. But the big difference is the MKZ is hybrid, while the Impala isn't. They also cost the same. Clear advantage for Lincoln.
Chevy did do a good job with design, even the new malibu looks great and design was where both of these cars were failing, they already had nice power to them like a lot of american sedans