SLB/DMB questions

Here's something i'm not sure about since i rarely use DMB/SLB. But here it is.

"The amount of damage increase by the buff is not affected by the base damage of the equipped weapon."

This was taken from the wiki so i'm wondering if a +15 Falchion with 14 DEX has a similar AR to a +15 Falchion with 40 DEX. Can anyone clarify this?

It should say that the damage increases with the MagAdj of the talisman. It doesn't depend on the weapon you're using. 14 has lower AR than 40 but that's the weapon's AR not the damage from SLB/DMB.

The bonus damage provided by the buff is static. If you have a +15 falchion at 14 dex and 40 dex the weapon itself will do a different amount of damage, but the buff will do the same amount.
..............| Weapon Damage | Buff Damage
14 DEX | 100 .................... | 300
40 DEX | 300 .................... | 300

Oh, so it simply adds with the base AR of the weapon? Awesome.

But if i add it up correctly, a 14 DEX Falchion with DMB is 693.
A 40 DEX Falchion with DMB is 831.

Since it's only a temporary increase of nearly 200+ AR, would you suggest staying at 14 DEX or 40?
Because my build is going to be a FTH/INT so i'm trying to divide my stats. I have 45FTH, 36INT for MLGS so i'm trying to min maxed as much as possible.

Well as long as you switch to the MLGS once the buff runs out its probably not worth going to 40 dex, 14 should be fine.

I've tried DMB with base stat weapons and it sucks. I had couple builds like that (one has 50 Faith, minimum stats for Longsword) and I hate when the buff runs out. People usually turtle till your buff runs out so you're stuck using occult weapons. At least you have a MLGS.