Firestorm vs Storm Call

Firestorm:
Is horrible vs big packs and is only good as single target with concentrated effect.
You can't call it consistent when the fireballs fall randomly...
It has low damage effectiveness because of its multiple hits per cast.

Storm Call:
Good multi-purpose skill, you're kinda forced to take the AoE passives/AoE uniques if you want to make it work though; I like Storm Call but the AoE is simply too small without Increased AoE boosters, otherwise it's very strong.

I saw someone running triple totem Storm Call with Increased AoE (and AoE passives) and he was carrying the party really hard, this was Lvl 75+ maps.