Typically, yes, being corrupted makes the individual stronger. But not necessarily in terms of actual force they can exert.
They certainly become harder to kill (risen keep moving even after being dismembered; old icebrood’s bodies turn to ice so piercing weapons no longer work, you have to smash them; branded are said to be capable of reforming over time, and they’re made out of crystal so extra force is needed to break them than with standard creatures). But whether they’re stronger or not than before depends on how much corrupted magic is sent back into them – the more corrupted magic, the stronger and more intelligent they are. Most corrupted minions are mindless grunts, overall weak individually thus focus on swarming. But those that can hold conversations are typically tougher than when alive, and champions that are capable of commanding armies are even more tougher.
This is universal across dragon minions/corruption.
Dear ANet writers,
Stop treating GW2 as a single story. Each Season and expansion should be their own story.
