Both Rutabagas and Potatoes are healthy and nutritious for you but Rutabagas are more nutritious than potatoes and also contain less calories than Potatoes do overall.
Rutabagas are also good for improving your digestive health and contain more fiber than potatoes which is good for your overall health and since Rutabagas are also lower in calories than potatoes that makes Rutabagas a better food to eat when trying to lose weight.