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I don't agree. The graphs are here to show let's say "public information" that should be obtainable via undescript general spying. Provinces, castles, VPs are all countable. Army size & gem income are aggregates that only give a vague hint about the real thing, but I take them that way (for example a 1000 Militia army looks huge compared to a couple SCs, but bear no chance !).
I don't want the graphs to give exact info, as they are they're fine for me.
Overall the only graph I find "too much true" is the research one, you can tell the real amount, something like "number of researchers" would be more consistent.