Which is better for Frost 2H Tanking

[20x]

Edge of Ruin - Item - World of Warcraft (http://www.wowhead.com/?item=47493)

or

Colossal Skull-Clad Cleaver - Item - World of Warcraft (http://www.wowhead.com/?item=37852)

!Rawr Say Edge of Ruin, Tankpoints says Edge of Ruin. Edge of Ruin gives something like 87 more Health. Colossal has some agility and some haste. I am so confused.

Here is my armory if that helps.

The World of Warcraft Armory (http://www.wowarmory.com/character-sheet.xml?r=Blade's+Edge&n=Egrues)

[asches]

tanks says edge of ruin.
rawr says edge of ruin.

haste isnt really important at all for frost tanking.

[20x]

Meant to say Tankpoints says Colossal

Rawr Says Edge of ruin

:\

[Kurtosis]

Tankpoints is FUBAR if it says Colossal. There's no comparison, Edge of Ruin all the way. More weapon dmg (hence more AP that buffs all DK abilities - strikes, autoattacks, spells, diseases), more stam, better itemization.

Colossal's only advantage is more Str+Agi than Ruin's Str, but Haste is a complete waste for DK tanking (slower weapon speed w/ bigger hits means less parry-haste dmg from boss).

Colossal is also 19 ilvl pts lower, so if it has any hope of being better, it would have something like hit or expertise (which most DK tanks at that level are starved for) instead of Haste.

[Trork]

Edge of Ruin for sure, even though its not the optimal tank weapon.

[GravityDK]

TankPoints doesn't rate threat, just survival. It's the wrong tool to use for weapon choice, it's just a useful indicator to compare the survival values between items.

Rawr understands both.