Lb3 melee is always the strongest, its usually use by a ninja on progression or clear savage etc. On weekly o5678s farm I've been joining there's never any moment that I see it use by any melee, unless alot of death or mistakes especially at o8s 2nd forsaken lol thats when healer lb3 comes handy.
Whoever said caster / range lb is more effective makes me chuckle a bit lool.