No, they mean what they say. If a person needs to watch for gluten, then this is pertinent information. And if a person prefers organic food, then this is important information as well. As such, the people looking for this information would probably look at it as healthier food in view of their preferences.
Lower calories? Lower than what? I do not understand the reference here because neither the term ‘gluten-free’ nor ‘organic’ has anything to do with calories.