Yes, you were right. Of course you didn't explain the differences, or point out why it was major surgery.
And really, I still don't think its "major" surgery. It's no harder than replacing a rusty lower quarter panel section, and most of these cars need that nowadays. All you need is a spot weld cutter/drill and a MIG welder for some spot welds. I won't be doing it myself because my Duster doors are in good enough condition to not make it worthwhile, but that doesn't mean it might not be useful for someone else.