A question on power stone champion

WeaponXBrute_47

So I'm currently at 6.2.6 and I have the options of either out damage his regen or control the fight...
If its controlling the fight, should I rank up duped sorc supreme or unduped tigra.....any suggestions..?

WeaponXBrute_47

Just so u know...I can rank 3 Mystic dispersion.