Question about talents

I am playing ad a wizard using skulls and cosmic orb mythical.

I have looked at the talents on my gear but I am confused.

Specifically the talents that should increase my dps. Ie. If I increase any of my elemental talents, or the talent that should increase skull dmg, I expected my dps, as reflected in my hero tab, to go up but it remains the same. I even made sure that the element of the item is the same as my and oh.

In contrast the talents that give extra all resist does show the extra resist.

Also the formulae in the codex makes no mention of where talents come in.

Please explain which talents will effect my dps and the dps of my skulls and why I have not seen this effect in my hero tab.