The pics you posted of the back showed different shapes. Can you post the back of the ZF and Gen?
My VSF is pre raids. No doubt it feels cheaper in hand due to its poorly finished edges. It's pretty evident when your holding it and Gen. Gen is gen but that gen feeling is definitely more on the ZF than VSF. You can't feel that at all?
You're mixing 3 different topics
1) the crown guard shape from the back: as per my picture and my comment, the shapes are identical between VSF and gen, you're making up differences. I'll post a comparison with the ZF but I didn't say ZF is not good in that aspect, I just defended the VSF
2) the crown guard shape from the side: VSF wins easily as it has the slanted crownguards and ZF doesn't
3) the gen feeling, which I never discussed. On this one ootb the bracelet of the ZF feels better, but I'm sure with a baby oil bath they will feel the same. However my ZF has a crown that is gritty when the VSF is super smooth, and winding the VR on the ZF is definitely less gen-like than winding the VS3135. So overall VSF is also a winner here. And the edges of my 2 VSF are well finished, nothing to complain about here
now there's also other differences such as SEL recession which is not as good on ZF, but SELs are tighter than the VSF. Crystal is much better on ZF as well as datewheel. However there's a mismatch of Lume between hands and dial on the ZF.
So as usual pick the flaws you can live with