Well, more powerful in this case is a problem. Because the thing that it's more powerful than is a common balance complaint. Anyway, here are my builds for the three powers. These builds should represent the pinnacle of combat spellcasting for a starting character without Sponsored Magic or Lawbreaker. I'm actually not sure whether Elmer is stronger than the other two, but if he is then there is a problem.
Element-Commanding Elmer
Conviction 4 Lore 5 Discipline 5
Elemental Command [-2]
Refinement [-5]
Specializations giving +5 control and power.
Offensive control 10
Offensive power 9
Defensive control 10
Defensive power 9
7 refresh spent, one element available
Evocating Evangeline
Conviction 4 Lore 5 Discipline 5
Evocation [-3]
Refinement [-5]
Two staff foci, giving +5 offensive control and power. Specializations giving +2 power and +1 control.
Offensive control 11
Offensive power 11
Defensive control 6
Defensive power 6
8 refresh spent, three elements available
Channeling Charlie
Conviction 4 Lore 5 Discipline 5
Channeling [-2]
Refinement [-4]
Two staff foci, giving +5 offensive control and power.
Offensive control 10
Offensive power 9
Defensive control 5
Defensive power 4
6 refresh spent, one element available