Ok, I will give you a more detailed critique as to why I think the Thesis is (as we Americans call Butt-Ugly).
Looking at the photos of the car I see a bunch of disjointed elements. The strong protruding front cowl/grill is trying to imitate a Jaguar... but it really sticks out too far. The headlamps give it a bugish appearence, without the charm that Beattles have. The two front design elements, the grill and headlamps, make it look like it has a long snout and buggy eyes... not too flattering. The side profile reminds me a bit of the Daewoo Leganza... again not too flattering to have your styling compared to a Daewoo. The rear end reminds me of the new Altima, with the short decklid and high rear sill with the small rear bumper. Not that the Altima is an unattractive car, you'd just expect more in a luxury car. I see some elements of a Bently in the rear taillamps, but it seems to be merely copied, not original.
As for my definition of good looking luxury, I saw a Peugot 607 on TV and it certainly stands out in terms of European luxury cars... a tad bit conservative and probably wouldn't appeal to American markets but overall attractive. Personally I find the S-Class to be very well styled. Well proportioned, slightly conservative and understated. Everything the Thesis is not. The Italians have not really made a good looking sedan in ages, or ever really. Coupes and roadsters yes, but not sedans.
Stop drop and roll will not save you in hell. --- seen on a church marque in rural Virginia