Sharain wrote:
The thing is, they're multiplied, so while 2 AGI > 1 MAB holds in "average case", it doesn't always.
From
http://wiki.ffxiclopedia.org/wiki/Calculating_Weapon_Skill_Damage :
Damage = ((lv + 2 + WSC)*fTP + fINT) * resist * elemental staves * weather * MDIF * magic damage adjustment.
We can ignore resist, elemental staves, weather and magic damage adjustment, because they affect both cases the same way. So it boils down to
Damage = ((lv + 2 + WSC)*fTP + fINT) * MDIF
Assume fINT is the minimum, so 8. Wildfire's ftp is 5.5. Modifier is 60% AGI. Assume your level is 99.
Damage = ((101 + WSC)*5.5 + 8) * MDIF
To illustrate the point, lets say you have zero extra mab ( MDIF = 1) and 200 agi. Dmg = ((101+200*0.6)*5.5 + 8) * 1.0 = 1223.5.
Add 13 agi. Dmg = ((101+213*0.6)*5.5 + 8) * 1.0 = 1266.4
Instead add 6 MAB (so MDIF = 1.06). Dmg = ((101+200*0.6)*5.5 + 8) * 1.06 = 1296.91.
That's a hypothethical case, LS mate isn't on and I don't know his gearset, he just gave me the agi and mab numbers, which I've completely forgotten.
Edit add: So yeah, it's pretty much the case that poster above explained that makes relic boots +2 better.
Edited, Mar 7th 2012 8:21am by Sharain That's a very good explanation.
My personal math works out to be (guesstimating a little because I am not sure of exact base AGI stats for 99 Elvaan COR):
((101+ 133*0.6)*5.5 + 8) * 1.32 = 1323.16 (So my difference of 80 extra AGI in your original example is surpassed by just 32 MAB, 8 less than the 2:1 formula.
If for example I used Navarch's Legs +2 instead of my Denali legs, the math would be:
((101 + 138*0.6)*5.5 + 8) *1.29 = 1314.38
If instead I had one extra AGI on those legs to hypothesize a perfect 2 AGI > 1 MAB scenario of Nvrch. Legs +2 vs. Denali, the math would be:
((101 + 139*0.6)*5.5 + 8) *1.29 = 1318.63.
Adding one AGI =
(1) (101 +1*0.6)*5.5 + 8) * 1 = 572.468, representing a ~9 point damage increase if the AGI = 0.
Adding 10 AGI =
(2) (101 +10*.6)*5.5 + 8) * 1 = 596.5, representing a 33 point damage increase over a zero AGI build.
Adding 100 AGI =
(3) 893.5, representing a 330 point damage increase (linear/10).
Adding one MAB =
(4) ((101) *5.5 + 8)*1.01 = 569.134 (5.5 damage increase over MAB=0)
Adding 10 MAB=
(5) ((101) *5.5+8)*1.10 = 619.85
Adding 20 AGI (2:1)=
(6) ((101 +20*.6)*5.5+8)*1 = 621.5
Adding 50 MAB=
(7) ((101)*.5.5 +8)*1.5 = 845.25
Comparing 6 to 5, and 7 to 3, we see that without the other stat, this is a sliding scale. However, realistic gear stat choices such as using Commodore Bottes +2 instead of Nvrch. Feet +2 (6 more MAB with loss of 13 AGI) provide:
Navarch +2: ((101+ 133*0.6)*5.5 + 8) * 1.32 = 1323.16
Commodore Bottes+2: ((101 +120*.06)*5.5 +8) * 1.38 = 1324.11
Conclusion: Side Grade. My future ballpark yay/nay decisions will depend more on a 2.5/3 decision for AGI over MAB, or 60-75% MAB over AGI given a single point of difference in damage.