I know that it doesn't make your bonuses better in anyway, it just increases your chances of getting one. I admit that I skimmed his post, I didn't comprehend it that much.
Okay, fair enough.
So I compared my Vintage Balanced Slicing Sword to him and his starts are worse. So it means that the stats of the crafting bonus would be worse? Like I had a 30%+ damage and 20%+ APS when I didn't used a book, while he had 20%+ damage and 5%+ APS when he used that book?
No, that's not how it works AFAIK.
None of those books increase the % of the bonus received (assuming a bonus is received).
In other words, the % of the bonus you receive always depends on the roll of the RNG, and there is nothing you can do to influence it on a single roll/craft basis.
Say for example the chances are as follows:
- 2% Chance of 25% Craft Bonus (Excluding any hard limits/caps)
- 5% Chance of 20% Craft Bonus
- 10% Chance of 10% Craft Bonus
Then in such a scenario you will (on average) create a 25% (perfect) craft 2 times out of 100, regardless of the books you use. Of course the % I have listed are just for example purposes, the point is the books have no effect on them whatever their true values are.
Therefore, as Zingman stated:
Your best option for crafting is your best "Crafting on the Cheap" plus (optional) your best "Gunsmith Monthly".
The former reduces the costs for you, particularly in batch crafting; while the latter slightly increases the chance of receiving a bonus vs not getting a bonus at all, but it does not change the % of a received bonus.
I hope that makes sense.