Q:
Major and Superior runes...do they stack?
it should. I would find no reason it wouldn’t.
http://wiki.guildwars2.com/wiki/Rune_of_the_Necromancer
The wiki says the effects are dependent on the number as well as the grade of the rune.
I really apreciate your response to my question, and you may well be right.
I have to confess though, I’m not sure ( effects are dependent on the number as well as the grade of the rune ) means major and superior will stack.
I really hope others will comfirm your opinion or not.
I think this may be a grey area where there is no real proof one way or the other.
I think your right in that it is a grey area. The only way to test it would be to take off some armor (say both pieces with major runes) and see if it affects your regeneration rate.
It should be noted though that having major runes of say dwayna don’t get you further up on the superior rune of dwayna’s ability list (and vice versa).