He could have jus' scored epic on the starter amulets...I mean, all you need is a Holy Helm, 5 On War, mech battallion and a medium medal box and he's literally set up to reach his current position. If he's experienced (I fully expect he is) and decidin' to buy in (very possibly) then he could so easily reach that position w/ minimum/no purchases.

Or he coulda jus' got some 67 attack hero and bought in heavily.
Do the math on the hero; what's it's base attack rate?