You're suggesting that photon beam cannons fire neutrinos?
No, I suggest that the given counter arguments are void.
It can be a basic law for beamweapons to penetrate any energyfield without loss, and different technologies wont be able to change that.
Of course we can say if its real that FS beams can penetrate DW shields:
Its not, cause both are only fiction.
Illogical fiction without a lot of continuity and real world physics.
In the end its always up to the author which he likes better.
You can only argue what decisions of the author contradicts all given canon the least.
FS beams being shield piercing violates neither SW canon nor FS canon.
However, FS beams being not shield piercing against a different shield technolgy doesnt really violate SW canon or FS canon either. (at least only very very slightly)
My statements earlier were meant to show that special shield piercing weapons are not violating sw canon.