You are getting really confused there.
We always knew that there was no dice rolling on the check. If you meet the requirement, you pass.
Most of this information is on the wiki by the way (including much of what is generating confusion here).
The only thing that is still not clear is wether the persuasion skill is an independent check or how exactly it influences the check. Keep in mind that this is pretty much irrelevant for most players, but, If anyone's willing to go through the trouble of testing, I already pointed out the methood:
Still, there is only 1 way to check for sure:
1 - Edit a character down to 1 or 0 in the relevant stat (with 0 persuasion).
2 - Increase the relevant stat until it's possible to pass the check.
3 - Add 1 persuasion
4 - Lower the stat until it is no longer possible to pass the check
If at step 4, lowering the stat by 1 fails the check, you are correct that it is independent from the stat. If it does not, then it is not independent from the stat (unless it doesn't fail all the way to 0, in which case you will need to test at a more difficult check)."
I'd do it, but I don't really plan on going back to divinity untill a large mod or patch draws my interest back to it.
