I fully agree with you, without question. My point was and is that the fat content in ground turkey will always be less because it has less fat content. There is no way possible that I know of to change the fat content other than using leaner ground beef. 75% lean ground beef will always have more fat than 95% lean because of the very fact that you stated, there is more fat in 75% lean ground beef than in 95% lean ground beef so of course there will be more fat to cook down but you only cook the moisture and renderable fat portions from the meat, you don't actually change the mixture. If that were possible there would be no need for separate grades of ground beef because, you would only have to cook what fat you didn't want, away.
Package labeling is required by Federal law, and is designed for you, the consumer, so the information that may not be apparent is available to you. It is for as served per portions, not what it starts out to be. The United States of America has the most stringent food labeling statues in the world, much to the chagrin of other countries. Do you think that if a producer could get away with labeling 75% ground beef as 95% ground beef with no repercussions, there would even be 75% on the market, every package of ground beef would be labeled 95 % because they could sell it for more. I have very little faith in the US government, but as far as food is concerned and the way it is monitored they set the standard in the world. Look at the salmonella outbreak last summer, by the time it was said and done we knew what farm it came from in Mexico, what trucks it was shipped on, where it entered the country, and who it was supplied to. China can't even tell us what manufacturers used and still use lead base paint in the toys for our children, and they have a totalitarian government.