The US Spec version just looks awkward in comparison. I really liked how the body panels shaped the Japanese version, they seem more jagged on the domestic one. Additionally, the Japanese spec versions headlights have a black stroke-I think it looks much better.
I wonder if Mazda's lack of information of the upcoming 6 has something to do with Ford asking them to be quiet for now, as the new Fusion will see similar hardware and they are just not ready for that yet?
My Top Gear magazine this month had a really good write up on the new Mazda6! They were (jokingly) compairing it to a 599! They had good things to say about it none the less. Not to mention it looks great, especially in white or black IMO!