I'd say that your first attempt at a jam is going pretty well, so you you shouldn't worry. :D
By the phrase quoted, I meant games like ones that have clearly been submitted to many different (often unrelated) jams for the purpose simply driving traffic to their game, and they were made like a billion years prior to the jam, as an example. I should have elaborated, but I'm not sure this clarification is satisfactory to begin with. D: