It makes up for the lacklustre performance of their super in PvE. We get some of the coolest abilities but no over shields or group OHK kill options. Both sub classes are designed for run and gun, never stop moving tactics. And these go with the crucible like chocolate topping on ice cream! It's not that there is an imbalance, it's just that the class suites the game play. Each class has it's pros and cons and fits a different role on the battle field.