-1 for not saying what your bow ability is (base and total) or elemental damage
Weapon ability plays a role but both (bow in this case I guess) and str scale as a square root.
True ability plays a role, but if you hold weapon ability constant then it shouldn't matter over the course of the graph. I was also thinking that elemental damage plays a role as I looked at the graph. The thing to look at is marginal damage, which elemental damage shouldn't change as you increase stats. We also need to understand that this graph is for one person and their unique gear, ability, etc. But the shape of the graph and the marginal damage increase should stay the same, whether or not elemental damage shifts the curve up or down.
And that's about where my math skills end
![Laughing :lol:](./images/smilies/icon_lol.gif)
someone else who's more knowledgeable can talk about this more. I'm out!