I'd say online patching is more likely.
Have to say though... as good as this game and the Vita looks in general (not talking about graphics), I really do wonder what future there is to dedicated handheld consoles which cost 300$ and the games cost 40$ when ios and android have pushed down the threshold of mobile gaming expenditure so low.
There is a future simply because of the content. You won't get Mario or Uncharted on formats other than Nintendo's and Sony's. For now at least. It'll be like DSLRs vs. cellphone cameras.
Or to put in your lexicon, PCs vs. consoles .