I had in mind field supplies, not so much troops or vehicle supplies.
You're kinda missing the point. I did the same thing when I had started playing.. I think my argument was that the C47 carried more than 10 troops, so why not have it carry more .. I think 26 was the magic number.. or something like that.. Because it sure would be nice to either have some troops extra in case a few get killed by the defenders, or, better, being able to capture 2 bases in a single run. ( without reloading ) Then HiTech's dictate about having to increase troops to capture if you increased troops being transported sank in.
Don't consider it a historically accurate measurement of resources, as it is more like, it takes x units per player to deliver.
So if a base requires 5 base supplies to restore the strats, it really means 5 players running a supply. Or 1 player running supplies 5 times.. etc.
One of those compromises between reality and what works in the game environment.