The US-spec Buick Regal is receiving a better-than-Crosstour reception at Facebook, where official photos are showing some slight visual differences from the Chinese-market model. Against all the odds, the US-spec Buick appears to have dropped the Chinese version’s aftermarket-worthy fender vent. A more-subtle grille is another unexpected but welcome maturation. Or is that regression? This Buick’s as clean as the Insignia, somehow doing without the acres of chrome and tacked-on baubles that too often signify “American luxury.” Predictably, the most common comment on the new Facebook page is “needs ventiports.” Chinese-market Regal, for comparison, after the jump.