OK, after all this dicussions I made a test and tried to "simulate" the expected damage with and without might for resolution (sabre) and St. Rumbalt (greatsword). The data are taken from the wiki, so they may be wrong. I have used deathblows (100%), reckless assault (20%), anihilating crit (100%), superb weapon (45%), 50% might bonus, sabre (20%), 2h style (15%) and a 30%lash (=lash + talent). The sabre has a base damage of 11 - 16, I took the average 13,5. The greatsword has a base damage of 14 - 20, I took the average of 17. The numbers are rounded and I do not include all bonusses that you might have in the game, so these data are just a first guess.
resolution without might bonus: 51,975 + 15,6 = 67,575 (slash damage + 30% lash damage = total)
resolution with might bonus: 58,725 + 17,6 = 76,325 (about 13% more damage per hit)
St. Rumbalt without might bonus: 64,6 + 19,4 = 84
St. Rumbalt with might bonus: 73,1 + 21,9 = 95 (about 13% more damage per hit)
The damage per hit of the 2h weapon is about 25% higher than the sabre!
Please note that St. Rumbalt is even better than this number because of:
- prone on crit, which allows sneak attacks, reduces the enemies deflection and the enemy cannot attack you
- The weapon uses the best of 2 damage types, no need to change the weapon.
Sorry, but I am not a math expert, so I cannot put a number to those advantages. like prone on crit is worth X points of damage per hit.
My calculation does not include increased crit multiplier (durgan steel and/or quest talent), buffs (e.g. +10% from priest bless spell) or any other effect (e.g. equipment) that might increase your damage. It does not include special attacks or backstab because they can only be used a few times in combat. I assume a crit, because this char will crit a lot. So I cannot put a number on things increasing acc or that convert hit to crit. If you enchant the weapon better than superb, add other damage bonusses and perform special attacks, it will be in favour of the 2h weapon, because the effect is based on your base damage. 2h Weapons are better against enemies with high DR and those are the importent ones, because nobody cares how much overkill damage you do to a wolf.
Your damage will often be higher than the numbers above. The damage bonus of St. Rumbalt over a sabre will be more than 25% in most cases.
For the numbers above, I have also tested, when the DPS of the mig rogue is higher than the DPS of the dex rogue. The mig rougue becomes better when the enemy has an DR of 38 or higher. I have not played the game on PotD, so I do not know the highest DR of enemies in this game. Anything that increases your damage will increase the DR value where mig becomes better (It was 22DR in my first guess. Now I tried to use more realistic conditions when fighting a dragon and it is 38DR. Since I have not included all possible sources of damage it will usually be even higher.)
summary:
- The damage bonus for a rogue with a 50% mig bonus is about 13-15% of damaga per hit compared to a rogue without this bonus.
- A rogue with very high dex and little might will almost always have a higher DPS than a rogue with high mig and little dex.
- A 2h weapon will do at least 25% more damage per hit than a dual wielder. Most of the time the bonus will be even higher, but it is hard to put a number on it.
- This is mostly guessing: A char with St. Rumbalt who does everything to increase his speed (durgan steel, gloves, potion, only cloth armor, . . .) will not only have a much higher damage per hit, but also the same or even higher DPS than the best dual wielder.
While a dual wielding rogue with max dex may not have the ultimate damage per hit or DPS that is possible in this game, his damage will definitely be very high compared to most other chars, at least against a single target. The dual wielder has it much easier to reach low or even zero recovery. High dex and low recovery is also useful when you use items, scrolls or other things.