Arcane Mage does not rely on crits like Fire Mage, instead, it provides steady DPS, and does not suffer from RNG like Fire, however, in end game fire will provide in most cases higher DPS.

Talents for Arcane Mage Wotlk

Arcane Mage Talents for Wotlk

Glyphs

Major

Glyph of Arcane Missiles

Glyph of Molten Armor

Glyph of Arcane Blast

Minor

Glyph of Slow Fall

Glyph of Frost Ward

Glyph of Fire Ward