Commas with Contrasting Expressions: Do They Show an Omitted Word?

"I like this, not that."

Could you explain this usage by saying the comma represents an omitted word? I've always taken it to mean "I like this and not that" or "I like this, and I do not like that." Is this correct?

I'm wondering because I'm currently reviewing the usage of commas, and I'd like to know if I can explain it this way in my blog. The other examples of commas representing omitted words are:

• Lists (red, white and blue) - omitted "and"
  
• Paired/Coordinate Adjectives (sweet, delicious strawberries) - omitted "and"
  
• Other Omitted Words (I like this; John, that.) - omitted verb "likes"


So, if I'm correct about the "I like this, not that" example, I'd include it along with those other uses.