Relative benefits to +1 Attack Bonus and -1 AC spells / skills


Advice


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Since my last spreadsheet posted to the forum received a decent amount of positive feedback, I decided to post another.
In our current campaign, my friend is playing a Bard (who has several +1 buffs/-1 debuffs) and I wanted to see the impact those made during combat so I made a chart to show how increasing Attack Bonus by +1 or decreasing AC by 1 affected the to-hit chance. See the following link:

Pathfinder - Attack and AC Charts


  • The first table shows the benefit an attacker receives when increasing their Attack Bonus by +1 against different target ACs.
  • The second table shows the benefit of reducing a target's AC by 1 when attacked by different Attack Bonuses.
  • Either table can be read backward to get "Defense benefits of decreasing Attack Bonus" and "Defense benefits of increasing AC"
  • Both tables are player/enemy agnostic, don't account for other special modifiers, and only show benefits for +1/-1 shifts.

Comments and suggestions are welcome! My last charts were well worded and improved greatly from suggestions people made. Thanks!
-KaptainKrowbar

Sovereign Court

Are you sure you linked to the right table?


Curse you faulty clipboard! :blush: Thanks for the catch. URL updated.


Looking at your table it seems that a +1 bonus is most valuable when your chance to hit is minimal.


The Terrible Zodin wrote:

Looking at your table it seems that a +1 bonus is most valuable when your chance to hit is minimal.

Yup. If, for example, you are only able to hit a target on a 19 or 20, increasing your attack bonus by +1 will allow you to hit on 18,19,or 20 (which is a 50% increase!)


It's logical that the bonus is more valuable when your chance to hit is minimal. When you hit with 3+, a +1 to hit doesn't have a big impact. when you hit with 20s, a +1 to hit doubles your chances


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gustavo iglesias wrote:
It's logical that the bonus is more valuable when your chance to hit is minimal. When you hit with 3+, a +1 to hit doesn't have a big impact. when you hit with 20s, a +1 to hit doubles your chances

Yup. For those of us who are mathematically minded, it is quite obvious and logical. However, some people do still benefit from the graphical representation (and I thought it looked cool, to boot!) Getting the specific numbers was interesting, as well.


Krowbar wrote:
gustavo iglesias wrote:
It's logical that the bonus is more valuable when your chance to hit is minimal. When you hit with 3+, a +1 to hit doesn't have a big impact. when you hit with 20s, a +1 to hit doubles your chances
Yup. For those of us who are mathematically minded, it is quite obvious and logical. However, some people do still benefit from the graphical representation (and I thought it looked cool, to boot!) Getting the specific numbers was interesting, as well.

The Math is done very well. I agree with it 100%. It makes perfect sense.

However, I will still complain to the Bard whenever he chose not to sing and I miss by 1 no matter how much the Math proves that he shouldn't have been singing ;-)

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