[Saxon]

There are uses for this data, usually in combination with other data you have. Spikes and dips indicate some activity, which is can be useful to know about. Changes in recruiting patterns, build ups and beat downs, all give you information you can use.

Comparing nation to nation may not be useful for the reasons discussed, but comparing a nation to itself can be more directly useful. If you destroy 100 enemy units in an army that is typical of your experience with that nation, then look at the graph. Did they lose a third of their army? How fast do they re-build? How can you use that?

You see a spike in unit production, then face an army of milita. What does that say about their ability to produce good units? How can you take advantage of this?

Never ignore intelligence on the enemy, even if it is not the best or easiest to use.