Question: Do you think a nearly maxed to-hit fighter should have a 75% success rate in landing their melee attacks on end-game bosses? Here's the way things are currently working for me:
GRAZING HITS
Grazing hit formula as it stands:
(To-hit bonus + 10.5) / (2 * Target AC) + 25% for proficiency = % chance to hit rounded to the nearest 5% (this is determined by the die roll you see in your combat log).
R10 Black and Blue end dragon boss with a full improved destruction (-15 to AC):
Rolled a 5 with a 176 to-hit: Graze
Rolled a 6 with a 176 to-hit: Hit
This means on rolls 1-5, I will graze with a 176 to-hit. This means that I have a 75% success rate in landing my attacks on this target.
This means that the dragon has about a 190 AC, after incorporating a -15 to it's AC with improved destruction (since I was using that at the time of this calculation).
Just to check my math: 176 to-hit + 10.5 = 186.6/(190AC *2) + 25% = 74% rounded to the nearest 5% = 75%
With this formula, how much additional to-hit or target AC reduction do I need to not graze on a 5?
Landing a hit on a 5 means I need to have an 80% success rate, with a 190 target AC I need:
(10.5 + x To-Hit) / 380 + 25% = 80%
x = 380(.8 - .25) - 10.5
x = 198.5
I need to increase my to-hit by 20 additional points (currently impossible) to land attacks 80% of the time.
What about an 85% chance success rate?
x = 380(.85 - .25) - 10.5
x = 217.5
Against a 190 AC target, I need to increase my to-hit by 20 POINTS to reduce my grazing hit roll by 1.
Or, I can reduce my targets AC by 20 points to achieve the same effect. This is already after using -15 for improved destruction.
How to close this gap?
1. Acquire Precision: This automatically gives 1 extra die roll since it provides 5% to-hit. Should offensive melees do more damage by foregoing power attack and associated enhancements like momentum swing and lay waste? This is a very counterproductive way to encourage more damage
2. Be an elf and acquire the 4-6% available in their cores. Why are such bonuses not present in the kensei tree, which is arguably the most to-hit centered tree in the game?
In summary, salient points:
1. Maxed out to-hit melees are missing 1/4 of their attacks on end-game bosses.
2. The amount of to-hit necessary to graze on 1 die lower is nearly unachievable when sitting at an almost 180 to-hit.
3. The only way to close this gap is to forego crucial melee attributes like power attack and LD abilities to use precision or to pidgeon hole into being an elven race.
4. Why does the Kensei tree not offer direct improvements to % in landing attacks, as they are the most to-hit oriented class in the game.