Damage ??
Think of it a damaged arm wouldnt look like that , it would be kinked, powdercoat chipped , helm joints squeezed in. The a-arm is in top shape the problem is just that its a different model a-arm, maybe a +1 forward instead of +2 or it could even be off a yfz or raptor. It seems like a packing problem the guy made a mistake and put two different types of top a-arms in the box .