I don't think the Opel is as bad as it looks, at first glance. There's quite a bit of roundness to the front in plan view (to my eye), and the front/side transition doesn't look horrible.
On top of that, the designers undoubtedly sweated the "detail optimization" portion of the design to compensate for some styling compromises. EG - partial rear skirts, wheels fill the arches, the wheel covers are fairly smooth, low ride height... there doesn't even appear to be the usual rain channels on the leading edge of the A pillars.