From what I notice during Beta, the game extra bonus stack multiplicative.

And +5% per point gets weaker as you add more into it. For example, 20 str is +50% but 30 str is +100%

Going from 100 damage to 150 damage, you get +50% damage increase
But going from 150 damage to 200, that's only 33%.

And it gets lower as you get it even higher.

On the other hand, with 150 damage and +50% from something like warfare, you now deal 225 instead.

Last edited by Ellezard; 15/09/17 10:46 AM.