Reason for this can easily be seen with our stat values.
Versatility is by far the strongest, at 0.69 ratio compared to agi, followed by much weaker stats crit, masteryand haste respectievly.
How is this the problem, you ask?
Well, versatility provides a flat damage increase as well as some other stuff like less damage taken and it's balanced as such.
That kind of stat is overloaded, it's not offensive only, and yet it's still by far our best stat, while something like haste which double dips as damage increase is much much weaker than it. That's a poorly though out design right there and it will hurt us so much in upcoming patches and gear upgrades.