Differences between Controller, Corrupter and Defender Support Powersets

Ranged Damage
Corruptor values are about 15.4% stronger than Defenders, and about 36.4% stronger than Controllers and Masterminds (before any Inherent abilities and not accounting for Pets)

Melee Damage
Corruptor values are about 36.4% stronger than Defenders, Controllers and Masterminds

Ally +Defense
Defender values are about 33% stronger than Controllers, Corruptors and Masterminds

Ally +Resistance
Defender values are about 33% stronger than Controllers, Corruptors and Masterminds

Ally +Damage
Defender values are 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

Ally +ToHit
Defender values are 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

-Damage
Defender values are 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

-Defense
Defender values are 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

-ToHit
Defender values are 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

EndDrain (for what little effects actually use these mods)
Defender values are about 13.6% stronger than Controllers and Corruptors, and 25% stronger than Masterminds

Ally Heals
Defender values are about 13.6% stronger than Controllers and Corruptors, and 25% stronger than Masterminds

Debuff Resistance/Mez Resistance (Not Protection)
Defender values are about 25% stronger than Controllers and Corruptors, and about 67% stronger than Masterminds

+/-Special (tends to use Ranged_Stun mod, so...)
Controller values are about 25% stronger than Defenders and Masterminds, and about 67% stronger than Corruptors

Controls
Controller values are 25% stronger than Defenders, and about 56% stronger than Corruptors and Masterminds

Knockback
Controller and Defender values are about 4% stronger than Corruptors and Masterminds

Slows
Controller and Defender values are 25% stronger than Corruptors and Masterminds

Self +Defense (Epic/Patron toggles)
Defender values are about 11% stronger than Controllers and Masterminds, and about 17.6% stronger than Corruptors

Self +Resistance (Epic/Patron toggles)
Defender, Controller and Mastermind values are all about 33.3% stronger than Corruptors

Self +Damage (Aim)
Defender values are about 17.5% stronger than Corruptors

Self +ToHit (Aim)
Defender values are about 17.5% stronger than Corruptors

/r/Cityofheroes Thread