Spellslinger vs Sunfury

Hi all haven played mage long and had some questions about the hero talents and the differences with them.

For those who have tested these two i am wondering as a arcane mage which would be more for single target burst, i was hoping i could roll spellslinger. But what im guessing is that isnt really spellslinger’s theme. That is more sunfury is this correct ?

Thanks again in advance for your time

Sunfury seems to be where its at currently for st and ss for aoe for arcane.