1) Medallions/Broguing. There is a very obvious difference in the quality of the hole-punching in the medalions/broguing on my EGs vs my G&Gs. On the EGs, even the very small holes have a clean edge, as if cut by a sharp knife. On my G&G's, the holes have perceptibly rough/torn edges, as though a tearing force rather than a sharpe edge produced the punch hole.
I see something similar when comparing my Vass with my EG's.