Behold, the power of DoT.

Mages:
50% stance w/infinity
10% damage increase when monsters are DoT'd, stunned, frozen, paralyzed, etc.
Ignore 20% monster defense
Summons don't turn monsters elementally weak anymore
Advanced Bless
Glacial Chains
Mist Eruption

Summons never did that, you are confusing that with Fire/Ice Demon
You forgot the 1.4X or 140% damage increase included with Arcane Magic i.e. 20% Ignore M.Def

The rankings still probably stand, but this may move things in one direction or another depending on your inclinations.