[Agema]

There's no perfect way to do it.

Gold cost is flawed also. A GP10 Res20 unit is a lot better than a GP10 Res5 unit. The game would have to have to have some way to take into account units without a gold cost (LA Ermor for instance would perpetually have an army size of pretty much 0), unless they have "hidden" values just for the graph calculation. A modification by unit size would make most sense to me, although I'd suggest they'd still be under-represented as a size 4 giant is probably worth about 3-5 size 2 humans.