I don't use the Standard Array. It's not normally something I would check. I'll look at it when I have time.
The primary abilities are ranked from the primary to least primary scores, based on class. For example. a fighter's primary stat may be STR. The first three stats are based on the PHB. The remaining stats are based on my opinion. I suppose they could be randomized, but it would take some work to make the spreadsheet work this way. This is basically a source code. If the end user wanted to change the order of stats, they certainly have that ability.
I'm not sure what you mean that every character will be the same. It's all randomized, but perhaps if you use the "Standard Array", they could be the same. Like I said, I don't use that option.
Let me look at it and see what I can do.