[Listy]

Just as a point of note:
In the older games RPO's where lethal against tanks. In one game I nailed about 30 Leopard 2's with them. They've been downgraded at some point recently. Despite encountering a great many RPO rounds with my tanks they've not been killed (Bailed and routed yes, but not dead).

Now if you want a Weapon to be scared of, have a look at the US 40mm TB grenade launcher, that offs MBT's alarmingly well. In one game recently I was using some Cougar MRV's with engineers as route proving for my main attack. They got ambushed in a city by a platoon of chieftains. So they dismounted and cleared out the tanks with those grenades.