You can say Wiz3>Elem3>Warlock able to deal 50% more damage, Elem3 to be honest without Wiz3 is quite sux, decent damage but difficult to cast in very mobby environment. But you have Frost Pillar to control so it still quite ok
But I think if you are going Cryo3, better to pick Psycho3 because they synergy very well. The Gravity Pole or Physic Pressure is able to deal better burst damage than Wiz3>Elem3.