Board Thread:Off Topic/@comment-25396609-20160205001148/@comment-25396609-20160224213759

I was only taking into consideration those with a (presumably) static form.

Qrow's is likely made of much lighter materials given he is a speed fighter who's primary combat style is scythe-based, while the other BFS wielders are striker tanks with weapons that have been shown as slow and heavy compared to others.