Well the real question is what is the PS tv? Is it a different system all together or is it like I said something that just streams your other systems to it?
Just think of it like a Vita, because it does everything a Vita does but on your TV:
- Playstation Vita and Vita-compatible (PS1, PSP) games
- Playstation Now
- Playstation 4 Remote Play
- Playstation Apps (Netflix, Hulu, etc.)
It even apparently has a slot for retail Vita cartridges.