Orb isn't that fast... looking at just the BannedStory animation and no other reference (since no one uses it in vids), it seems to be ~1 second cast.
Barrage is 2 seconds and 2300%, Orb is 1 second and 900%, making 1800%. On 2 monsters that becomes 2700% in that time.
However, since Barrage gets up to 3x as many hits/second as Orb, stun+SE helps it much, much more. 5300% in 2 seconds vs 2100%.
It doesn't matter, anyway. I'm not anywhere close to 4th job, and to be honest, I don't expect to be XD
Barrage is 2 seconds and 2300%, Orb is 1 second and 900%, making 1800%. On 2 monsters that becomes 2700% in that time.
However, since Barrage gets up to 3x as many hits/second as Orb, stun+SE helps it much, much more. 5300% in 2 seconds vs 2100%.
It doesn't matter, anyway. I'm not anywhere close to 4th job, and to be honest, I don't expect to be XD

