AI tank heavy on or off?

[Wdll]

I was wondering what you guys use in battles or campaigns between "normal" sides. (country X vs Y)

I noticed that I have it ON and was wondering if I turn it off if the AI will buy far less vehicles that would make it eh, too few?

I mean, is AI Tank Heavy OFF the normal and AI Tank heavy ON the special parameter or what?

Also, is it just for Tanks or any armoured vehicles?

I know the manual says the AI will buy more tanks than normal, but I would like to listen from your experience.