Does a weapon with 100att and 100 fire do 200 total dmg?

Been looking at weapons and raw attack lances do like 130-140.

But the ones with elemental affinity do 100-120 but add 150 dmg in the element.

So are the elemental ones way better than the standard ones?

Also off-topic: why are sometimes the dmg numbers white and sometimes yellow and sometimes theres >< around the numbers?

Id guess yellow is more dmg but i had yellow dmg numbers for 1. so idk.