Actually, you don't kill all the armoured using Attack Chopper in a major Armoured Operation. Because there are ALWAYS more armoured vehicle than Attack chopper.
With PA armour doctrine, AH-1Z is more suitable than Z-10 because Z-10 lack of communication/scout module that can identified battlefield threat. PA doctrine called for a combine operation which lay a 3 fold attack toward enemy armour, first by tactical strike into enemy armour column, taken down enemy C&C module, then a quick engagement between PA armour and Enemy Armour, and finally a mop up from CAS.
To do that, PA attack chopper needed to have independent scouting and communication capability, to select which target and priority them. Z-10 is a weapon ship, more in a way what Mi-24 is to Russian Army. Which is ironically, how Indian (Pakistan assumed enemy) fights. Which mean Z-10 is more suitable to be used by Indian Army than Pakistan Army