Power sword animations

Have anyone noticed that the power sword heirloom animations is completely different from the actual power sword weapon?

I have recently got the new heirloom and while playing the ltm, the 3rd person animation difference is very noticeable. I have to say that the heirloom animation looks like broken animations when compared to the weapon, as an example, Wraith loses her run animation and almost stand still when running and other characters lose their unique holding heirloom animation as well compared when to smaller heirlooms. I understand the size of the heirloom is different but why there is two sets of animations?

@Respawn, would the heirloom animation be updated in the near future? I love the heirloom but if that keeps giving competitive disadvantage at games, sorry but that will be something sitting on my inventory.