My apologies, I led you astray here. It should have been "Run CD Speed, Run Test menu, Create Data Disc" or "Run CD Speed, F9".
This will create a data DVD with canned data files. It also puts the burn info from the graph into the last data file so that, when you run the Disc Quality Test, the burn data (which does include the burn speed as the gray line) will be combined with the read data on the same graph (the top graph). If you do it this way then the burn speed IS included in the scan image.
Sorry, I had never tested media this way before. I normally just burn a movie using different software and then use the Disc Quality Test to scan it.
Looks like this RW disc is nearing the end of its life.