While the larger 16.29 might be a smidgeon more pleasing visually, the smaller 13.21 allows for being fitted in nicer, more classically sized watches ๐๐๐ป
Although the larger one could be squeezed into smaller cases if MB decided to do so (40-41mm should work fine - sadly they donโt do that ๐คท๐ปโโ๏ธ)
except, perhaps, the devilโs tail: Iโve never really understood why they did this (or simply I donโt respond to this whimsical touch). Best, Emmanuel