Ok...other 2 powers so far I see are bugged...Shrapnel Grenade launcher and Biggun...if there is anything in front of your target whether it be a npc or the tank these powers will NOT do any damage....also so is a piece of furniture is in the way it will hit that and not destroy it...the base item will just absorb the attack and not be destroyed.
Actually I find this is an issue with might based attacks in general, sucks having a random rock shield my enemies from my emp, killing the am.
Chain Gun destroys items. Same goes for Ice: Avalanche destroys items. Nothing in Quantum acts on the environment, beside those PI that cause objects to be attracted to the target (it's freaking awesome to see a gravitationally charged foes hit by a car!) However, munitions powers are all bullets and explosions. There is no reason why they shouldn't destroy props and barrels.