Yeah, you can have more bonuses, but just remember that staff is considered a two-handed weapon and hits based on int which means higher crit multiplier (if you put points into two handed) so I can sort of imagine phoenix diving into an enemy with my enraged, hasted, adrenaline rushed, flesh of sacrificed, staff bro to cleave into things.
Alternatively, I could go dual wielding wand bro that is aiming for 40-50% crit or something. That
Or wand/shield if I don't care for the missing stat point and care more about survivability (dat +110~ physical armor doe).
I think it depends on the Wizard you're building, your game plan, resources available, etc. Because a staff can be pretty competitive.
The only thing staff has is higher crit multiplier using two handed....and rage to get the crits.
But if you care about crits as a mage it makes more sens to use rage to crit with a spell instead of a staff usign the talent. Even the damage multiplier wouldn't make up for the difference on higher end spells.
And further as a mage you'll want to spend combat points into spell schools since that's your main form of everything.
At no point is a mage gonna be built around hitting with a weapon...that's what the warrior is for.
And given the versatility of wands and everything above...there's really never a good reason to go with a staff unless you specifically want to hit people with it for some odd reason; and even then it'll never be as powerful or efficient.
EDIT: and hybrid builds make better use of a wand *shrug*
