How realistic is War Thunder?

A lot of people on the internet says that War Thunder is much more realistic than its wargaming competitors ("world of" games), but this makes me wonder how realistic War Thunder actually is. There are also three gamemodes which are basically just difficulty settings (arcade is pretty much World of Tanks without an aiming circle and more realistic driving, "realistic" is quite more complicated but idk how it compares to real life, and simulator, hasn't tried it yet honestly, but from gameplay footages it's quite impressive). So how close are the physics and mechanics of War Thunder compared to real life? (I'm a newbie lol)