Yeah, that’s not going to fly.
With the passage of eight months, the president’s “JV” comment looks increasingly untenable, so we can understand why the White House spokesman would try to suggest that what is now known as the Islamic State was not the subject of the conversation.
But in quoting from the transcript, Earnest provided a selective reading of the discussion. In particular, he failed to provide the context in which Obama made his remarks — the takeover of Fallujah by ISIS. That’s fairly misleading. The interviewer was certainly asking about ISIS when Obama answered with his “JV” remarks.