They do. A corruption path MC is colder and feels nothing towards killing humans, and killing in general. A "good" path MC is like a white knight hero. Very out of character in my opinion. The corruption path MC character interactions and development are peak in comparison.
Yep, but as you probably noticed that certain character is at odds with the organisation and MC in the corruption path way more. Personally I think it's a much more satisfying story that way.