crushing advance gives no fury and u have it only for a few seconds, vs dh i would say wc is better even with no-rune, but that may be only personal preference. The reason they re-allowed wc was to not nerf fury too much vs legacy dh, because it just forced barbs to just get even tankier while not having the ability to catch dhs.
as for fury gain, threatening gives more fury overall but u have to spam it in the air when u have it, and then u may not have it when u are near the opponent.
even when i tried without wc i didnt use OP but ground stomp which also gives some fury... when it lands
I know this is for barb v dh, but in other matchups where stun is present OP is even worse, because u can't use while in cc, so u have to preemptively use it, which is impossible