Since ColorOS 13 and OxygenOS 13 share the same code base, they are nearly indistinguishable. It’s obvious that with Android 13, OnePlus has upped their software game to a whole new level. The company has previously committed to providing major Android updates for its flagship phones for a full three years.
For More details you can check out the Oneplus Forum (Chinese) For OnePlus 9R and OnePlus 9RT.