I am creating this topic based on the general discussion of the following: Power sword animations | EA Forums - 12125937
As example, Wraith loses her 3rd person run animation when equipped with the power sword heirloom which makes the character an easy target, especially when compared to using no heirloom or using the kunai. The same happens to other characters which loses their unique animations. Please note that the animations looks better when using the power sword from the ltm. I’ll be uploading some references later when I am home.