This is really nasty marketing that you need to be aware of, and why children have to be taught, at very young ages how to read labels and identify tricks designed to fool them. I've used my failing eye sight as a reason to get my daughter to read labels to me the last couple of years, and it has brought out many excellent conversations about food and nutrition that I don't think we would have had otherwise. She is becoming much more aware now. But as you'll see by the following article the bad guys are always trying to stay one step ahead...
And here is some info on how to avoid the stuff altogether;