Selling indulgences was an abuse (which is wrong), but that was not all that Luther revolted against. He revolted against Church doctrine which was always Church doctrine.
So you are wrong. It is not the same thing.
And of course, I don't agree that he revolted against "Church doctrine which was always Church doctrine." What was "revolted" against was not "always" Church doctrine, but was made up later. That doesn't mate me de facto wrong, it means we disagree. I of course, think you're wrong :)