Do you get XP (y/n)? If y go to RPG, if n go elsewhere.
XP are the only thing that defines a RPG?
Game has a large open world with weather and day and night cycle
Game has a inventory system thats even pretty hardcore for full RPGs in todays times.
You do side and main quests
You dont progress with XP in this game but you get better with your gear. XP are not the only way to get progression.
You have many dialogues with many different NPCs. Team up with them, kill them, listen to their storys etc.
Different endings
For me choice, dialogues and quests define RPGs way more than just xp. Thats why i wouldnt put something like Diablo2 on my RPG list, even if the game is great.