[Mobhack]

AI Tank heavy tends to buy infantry by the platoon when it would have bought a company, and mech inf if it can afford it, but as Don says you will need to allocate a decent amount of points for it to spend on tanks. So it wont make much difference on say a 2000 point buy in 2010, but that 2000 points may be adequate to see more armour in 1940.