How balanced are the Class Ultimate Spells according to you?

UP = underpowered. OP = overpowered. Please bear in mind that they are meant to end games so should be very strong

The Wild Hunt (Arch Druid) : Most voted :(Slightly UP)

The Great Mobilization (Dreadnought) : Most voted :(Well balanced)

Age of Death (Necromancer) : Most voted :(Slightly OP)

Age of Deception (Rogue) : Most voted :(Well balanced)

Age of Magic (Sorcerer) : Most voted :(Well balanced)

Armageddon (Theocrat) : Most voted :(Well balanced)

Global Assault (Warlord) : Most voted :(Slightly OP)