(That being said—and no detriment whatsoever with respect to your thoughtful work meant by this—I think it's fair to say that a number of people here might find of subjectively greater value what such production sources suggest than in what licensed tie-in media do, when it comes to interpreting what's onscreen. I only sought to provide that background information as further context to the discussion, for anyone who was interested. No horse in this particular race here. I certainly wasn't implying your interpretation was wrong or unreasonable.)
Well, sure, but I'm just saying that "older ship" is not the only possible conclusion to be drawn from "Warp 2 engine." That's the most obvious possibility, but that doesn't make it the only one.
Besides, as I've said, my view that the Intrepid is newer is based entirely on canonical information -- namely, the appearance of the ship itself. Since the design actually was kitbashed from components of the NX-01 digital model, that means it looks like a design that was derived from the NX rather than the other way around. There's no speculation beyond canon there, no appeal to sources beyond canon -- it's literally just a matter of looking at the actual ship. Those stupid useless windows directly underneath and blocked by the nacelle caps make no damn sense unless the ship class was mashed up from components that originated as part of a different design and weren't originally meant to fit together in that way.