[Imp]

1)Talking mainly playing the AI here to start with if battles are easy adjust the AI% setting it applies to battles to now before you had to manually give it more points. Tougher battle will inject life back into the game but before you do this consider the next 2 points.

Wdll right we are now talking about point 1 setting AI buy ratio compared to you but consider the following as have already said several times.
Setting it to crazy heights does not work unless take following factors into account.
1) Total forces a side are 500 units
So say you have for a campaign a core of 100 units setting to 200% would give AI 200 units except modified as follows.
2) AI will have more units as does not buy all best gear so can buy more anyway. Russia vs Germany might end up about the same if buys some nice (as in exp) German kit. The other way round with cheap Russian units it could now have 3-400 units
3) Now its a battle in which the AI attacks so it is supposed to get increased forces. It cannot buy them because it hits the unit limit.

You have to remember this & its easy to check after a battle look at the enemy forces. 25 to a page so if it had 20 full pages it ran out of points.
I say this because I see posts of I fight the AI with settings of 500%. No you dont unless all you have is 50 or so units alll together or very cheap ones.

So this raises the other points if you want to boost AI points you also need to take the quality of your force into account. Also note in a campaign your forces gain experience, once you start getting units with 100% exp they cost 50% more than the standard 70% guy.
So a force of 50 100exp Germans vs 60 exp Russians probably equates to 100+ Russians if the buy points are equal.