While that is true of many Lincolns, I believe the MKS is Lincoln exclusive, in that it has no Ford counterpart.

I should also say it's a little more than chrome that separates them. They have a longer warranty, better service, they are more nicely appointed and luxurious, and just overall have a classier image, which is important to a lot of people, although I do understand what you are saying. The buyer can decide if these extras warrant the extra money or not.