Sacrarium helm and dred set bonus to DCs ?

[Firelily]

The legendary sacrarium helm has:

Profane Spell Focus Mastery II

The set bonus for The Legendary Dread Isle's Curse has:

+2 Profane bonus to Spell DC's


Are these the same thing or do they actually stack?

[Tyrande]

Sounds like the same thing to me.

The difference DC bonus that I have seen are bonus (equipment?), profane, artifact, insight and epic.

If they are the same name, I do not believe they stack.