I was calculating with +40 from gear, as I said above. +36 from the job trait, for a total of +76 MAB. Since MAB is calculated as a multiplier, the base is 1.0 and every MAB point will add 1%, so 0.01. +40 from gear equals +0.4 and +36 from traits equals +0.36, so added to the base of 1.0 it will give you 1.0+0.36+0.4 = 1.76 (not 176). And +40 from gear is pretty low these days, you can get that from five items. A more realistic set would be +50, in which case the increase from another +60 from Laevateinn would be 2.46/1.86 = 32%. And it only gets worse from there. Every MAB you gain outside of your staff will make the staff decrease in value. Assume a future with +100 MAB in nuking sets. That would mean Laevateinn would only add another 25% to your total damage. That's not the case with Affinity staves. Damage affinity will multiply the damage seperately from MAB calculations, so you'd still get +35% damage from the trial staves, which means they'd be 8% better than the mythic in that scenario (consistantly).