Somebody on the charops board mentioned that Avengers will shine when facing higher level monsters, as the double roll is more worth the higher the number you need to roll to hit is. I punched some numbers in a spread sheet, and the while the Oath gives only a 45% increase in average damage if you need a 10 to hit, it gives a 75% increase if you need a 16.
This is discounting crits, though. As the required to hit goes up crits make up a larger percentage of damage, but as the Avenger has twice the crit chance of others (pre-epic), I would think that it would be to his advantage, but I haven't run the numbers on it.
This is discounting crits, though. As the required to hit goes up crits make up a larger percentage of damage, but as the Avenger has twice the crit chance of others (pre-epic), I would think that it would be to his advantage, but I haven't run the numbers on it.