You forgot to note better OR's will be released over the years so the specs and requirements will increase.Oculus Rift is "subjectively better" than the PS VR headset said no one ever.
Display: OLED
Resolution: 2160 x 1200
Refresh Rate: 90Hz
Platform: Oculus Home
Field of view: 110 degrees
Built-in audio: Yes
Built-in mic: Yes
Controller: Oculus Touch, Xbox One controller
Sensors: Accelerometer, gyroscope, magnetometer, 360-degree positional tracking
Connections: HDMI, USB 2.0, USB 3.0
Oh and I see audio but no mention of the dollar store headphones.