It is really funny how much better most ranged jobs (excl. DNC and BRD of course) are then most melees jobs. The can dish out the same damage, play off point and avoid all AoEs by doing so, have access to debuffs, CC, shields and gap closers. Compare RPR LB to BLM LB, both are functionally the same thing, whereas RPR has to use it in a group to get any value, BLM can use it in safety away from the enemy team, not to mention BLM LB's is double the length of RPR's LB. Then you have the damage, BLM does 12k to a single target and 8K AoE, RPR does 8k single target, both jobs LB button turn into a big finisher, except communio has a cast time and immediately ends RPR's LB, Foul has zero cast time and does not end BLM's LB.
This isn't to say RPR's LB is useless, it charges faster and the guard break into retreat can be game winners, especially in OT, but BLM's LB 10x more consistent and useful.