Hello,
I have found out that Static Titan Launcher (AT) unit have a problem with shooting. It looks that AT unit cannot start fire to armoured vehicles which dont detect us. It can be very easly reporuduce and it behaves always this way.
in other words Static Titan Launcher (AT) cannot shoot first to aroured vehicles. AT until will wait until vehicle will shooting to any friendly unit. Afterward AT unit behave corectly and start shooting to aroured vehicle.