At 45 Patch, the rare version of Blackram Soulshields gave you +12060 HP.
To do Blackram you needed the soulshields prior to that, which gave your character depending on the class between 9500-15000 HP total.
Epic version of Blackram Shields gave +17700 HP, Moonwater arena shields gave +25990 HP.
Arena has equalized gear, but the stats they give are completely different than what actual equipment gives.
Yes, hence why I said "Combs are only awarded for the daily quest which is 1x per day".