Barrelchest Anchor Better than D Mace at Cal'varion?

Looking at the OSRS dps calculator with rag armour such as salve, monk's robes and nezzy I see the barrelchest anchor outperform the dragon mace due to the higher accuracy and significantly higher hit. On top of this, I believe the slower attack won't be as much of an issue as during the enrage phase you are often walking around alot and not continuously attacking. The wiki only mentions the barrelchest for the special attack, so I was wondering whether you had experiences using it at Cal'varion.