So leveled up my wizard from 60 to 70 and in half the time clearing content so much easier than my crusader. Elemental damage gear ftw apparently.
That's because until you get a high damage roll Fate of the Fell, full Akkhan set with Heaven's Fury damage roll, and 40%+ elemental damage, your sader won't do respectable burst damage to compete with a wizard.
I do 350ish million damage to elites when all 3 beams connect. Having played a sader for 500ish hours, I can tell you that with lesser gear, the burst damage is so much reduced. I still remember when getting 25 million per beam on elites was something I was proud of.