It's for the sake of completeness. The pokemon are the same, but the text that appears when receiving is different.
The same goes for wondercards, if you have an italian ds and ORAS save and inject a english eur wondercard, you will receive the same as if using an italian wondercard.
There's still the possibility that they do different distributions depending on region (I don't think so though)
The steelix/glalie are always the same on those files, since they get generated in the demo, not when receiving them in ORAS.
ps: I'll add the italian file later. I could technically generate the other missing languages, but I see no point in doing that.