As JK says, the Chrysler roofline is "interesting" - quite attractive from some angles, odd from others, and the Buick is a smooth, sculpted shape all round.
But if you put a Chrysler New Yorker with the "formal" sedan roof alongside the Buick, it looks lean and crisp and the Buick suddenly looks a little heavy and bulbous by comparison!
Depends how you look at them. In their different ways I'd rate them about equal.
Grame, comparing a '67 Chrysler New Yorker, I would have compared it to a '67 Buick Electra 225, not a Buick Wildcat. I'll save that compare for a future date. Thanks!