User blog comment:Leviathan2186/Samara vs Jack vs Aria?/@comment-5020188-20130721192709/@comment-5020188-20130725203740

Samara usually has complete control over her powers- that gives her an advantage of being able to focus her energy, or hold back until the right moment. Jack, however, is capable of throwing out a lot of energy, most of it quite destructive, which Samara could find hard to defend against. Aria is somewhere in between.