When it comes to multiplatform AAA titles, there is almost always a difference between the console ports and the handheld ones. The differences are not minor gameplay or graphical tweaks. The changes are significant enough that they can’t even be considered as the same game.
Now, there are various reasons for this; the main ones being that the handheld ports are handled by different studios and handheld devices usually don’t have enough muscle to handle the complex console ports. This sometimes results in the handhelds being an underwhelming watered-down experience. In Batman: Arkham Origins, this is only partly true because while the PS Vita and 3DS ports (dubbed Batman: Arkham Origins Blackgate) are different from the console versions, it’s not a watered-down experience but an entirely new game that can stand on its own two feet.
Basically, Batman: Arkham Origins Blackgate is a 2.5D sidescroller and owes more from Metroidvanias than sandbox games. To give you a taste of what the game looks like in action, developer Armature Studio has released a 10-minute walkthrough with narration from game director Mark Pacini: