I believe this is the combination of the overall glass diameter, the box shape and the flattish shape of the bezel.I feel my 36mm (technically 36.5mm) Commuter wears larger than it's specs. Do you find that to be true with the 38?
My 36mm Explorer as well as the 40mm GMT Master II have a 30mm glass. The 36mm Traska is 31-32mm. So yes it visually appears bigger but sits very nicely on my wrist as the horn to horn dimensions as well as the overall case thickness are well proportioned.