Dear f-a-f, I think it would not be a very smart move from Subaru to offer an accessory grille that fits only a small portion of the 2013 and perhaps some of the 2011-2012 global Legacy line, but, as you said, and as I did myself prior to ordering this grille, a careful photographical study is desirable.
Let me say, though, that japanparts.com requires you to provide your VIN No. on ordering, so this should narrow the error margin.
Have a good one!.