Thank you.
The reason for asking the question was based on something I discovered while looking at the ThunderpowerRC website.
It would appear as though their G8 25C 5s 5000mA pack (574g) weighs the same as their G8 25C 5s 5400 pack (573g)
(Granted, the pack dimensions are different but nothing that isn't manageable)
Interestingly enough, the $ per mAH for each pack is about the same.

That made me wonder if there was a capacity requirement that would make someone use the 5400 rather than the 5000.