Calculating Stat vs Att/M.Att (Prime Scrolls)

Would comparing the effect of an allstat potion (Blessing) to that of an attack potion be a good way to avoid having to add up all sources of att and stats?
(In other words, do potions enter the formula at the same place as +stat/att on gear?)

Pretty sure they do, i know apples and such did but never bothered checking with stat potions, shouldnt be any different though