Some Maths Help

So can anyone explain how the level 41 item is showing higher DPS and better weapon than the level 64 one.
I am using fireball converted to cold damage with the Blueflame Unique item.


Wand 1
Item Class: Wands
Rarity: Rare
Morbid Barb
Volatile Wand
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Requirements:
Level: 41
Int: 95
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Item Level: 41
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Gain 20% of Damage as Extra Fire Damage
47% increased Spell Damage
57% increased Fire Damage
+2 to Level of all Spell Skills
11% increased Critical Spell Damage Bonus
21% increased Mana Regeneration Rate

Wand 2


Item Class: Wands
Rarity: Rare
Brood Needle
Volatile Wand
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Requirements:
Level: 64
Int: 146
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Item Level: 65
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71% increased Spell Damage
69% increased Fire Damage
+26 to maximum Mana
+2 to Level of all Spell Skills
12% increased Critical Spell Damage Bonus
Gain 42 Life per Enemy Killed


The reason i ask is everything i did in calculation would suggest the 2nd one is better.

Or, am i miscalculating how the +xtra fire damage is calculated on the total value, is this value added before the +spell and +increased damagae?

Just want to understand to help better plan what is better going forward :)

TIA

I think +20% extra dmg after any increases
Mean its just takes ur dps and added +20%
And +spell dmg also have diminishing returns cuz you have this from skill points