How exactly the damage depends from attack/defend ratio?

[Stepsongrapes]

Originally Posted by Handel

For exampel what is better?
1. To have +2 defence or -2 attack on the enemies?
2. To have +2 defence or +10 resistance?
3. To have +3 attack or +1 damage?

I the russian fan-made manual there are lots of calcualtions but nothing about this ratio.

Here's my understanding on these issues

1. To have +2 defence or -2 attack on the enemies?

A. Each point of difference between attack and defense grants a 3.3% boost to damage (maxed at 300%). That means that for the most part, there's little difference in your two options. It might matter if the game doesn't keep track of negative values. (e.g., -10 to attack has lesser effect on a mob with only 5 attack).

2. To have +2 defence or +10 resistance?

AND 3. To have +3 attack or +1 damage?

A. As the previous post indicated, this depends on the mob's base stat. If something has only 1-2 damage (e.g., a sprite), +1 damage is HUGE (+100%-+50% damage) while +1 attack is weak (.033 to 066 damage). However, if the mob has a base damage of 200-300 (e.g., a dragon), than +1 damage is worse than +1 attack (6.6-9.9 damage boost).