A lot less recalls or service campaigns than Nissan. A lot less NVRs (noise, vibration, rattle) than Nissan. Less components to compose a part/system than Nissan. A lot better technical support from Toyota than from Nissan. A lot simpler built = a lot more reasoning = a lot easier to service on = a lot more money earned for a service tech.
Former Nissan line tech, current Toyota line tech.