If that's borderline, which is ridiculous since you're just using the Vita as an alternate display and input method but it's still running on original hardware; there are far more egregious border cases of games that you can actually run on a different generation of hardware. For example, any of the games available through PSN Classics or Virtual Console. War of the Monsters for instance is available through that method. I'm sure plenty of others are as well.
I don't think the Remote Play rules Tokyo Jungle out, I think the fact that there's a PSM version of the game rules it out.