While in rage, a barbarian gains a +4 morale bonus to her Strength and Constitution, as well as a +2 morale bonus on Will saves .
The barbarian gains a +2 morale bonus on saving throws made to resist spells, supernatural abilities, and spell-like abilities. This bonus increases by +1 for every 4 levels the barbarian has attained...
Those don´t stack by RAW. So at low levels, Superstitious has absolutely no effect agaisnt spells/sla´s/su effects which target Will Saves? At higher levels, Supernatural out-paces the rate at which Rage bonus scales, but I thought I´d post this to make sure they´re not supposed to stack, before posting this to Core Rules Errata... Thoughts? It could just well be one of the many Rage Powers take-able at low level that really don´t have much benefit until later levels...
At low level, it does effectively stack for Fort saves, since one is a bonus to Constitution and the other is a bonus to Fort Saves.
At low levels, it is +2 to Fort and Reflex saves. At higher levels, you also get a faster progression of your Will save while raging.
It is not worthless at low levels, but it is only about 2/3 as good as it seems to be with a quick read, when you think it will stack with the rage Will save bonus. (It is even less, if you are not worried about failing Fort saves while raging.)
Umm... I think you´re mixing up Reflex with Will Saves.
Anyways, that´s the wierd thing to me, that it DOES effectively stack for Fort Saves, but not for Will Saves.
THen again, that could be due to intent, that Barbs should rock the Fort Saves, but it just seems a little funny to me, and certainly non-transparent/obvious.