Sony's strategy of interoperability between the PlayStation 3 and the PlayStation Vita is starting to look like it'll turn out poorly for the Vita. While on the surface the strategy has its perks, for the consumer, it can be prohibitively expensive. How many people really believe that a second-screen gaming experience is worth buying new hardware for?
Look at PlayStation All-Stars — it's the same game on PS3 and Vita, and allows you to play seamlessly on the couch or on the go with a save file that lives in Sony's cloud. It should be obvious that there are few fans enthusiastic enough to buy two copies of All-Stars so that they can play on the road with the same save file.
This speaks to a worrying trend where the Vita ends up subordinated to the PS3, rather than enjoying a dedicated software library enabled by its truly unique hardware.