Playstation4 pre-order deluxe content for PSN sub-account?

First, thank you for asking around. Second, the answer you got makes no sense. The content should be assigned to the installation, allowing any account (main or sub) to claim it.

Im just passing what I was told but I will for sure go back and ask some other people to make sure this is how it works and see if theres anything we can do

It usually depends on the type of content the bonus is.  For stuff like DLCs, those are shared amount all sub accounts, for other stuff like consumables (think FIFA packs, or coins from PvZ GW 1) those are only allotted to the account purchasing them.  It looks like the deluxe content is typed as a consumable in this case.

I guess I just have a different expectation coming from FIFA.  In the deluxe version of FIFA, you are given 3k FIFA points to start out (similar to GW2 deluxe giving you 200k coins). I never expected that copy of the game to grant me 3k points on every account I used, and it sure didn't.

I am sure that's just how the deluxe bonuses were coded in this case.

Yes in this case it is set up as a consumable, hence only being allowed to use it for the one account, same with the coins you get for the pre-order