Given the original effect was literally just an actual sunset double exposed, I don’t know that you could call anything else “more realistic”. Hyperrealistic, perhaps, but for my 2c, the Star Wars aesthetic is at its best when it is the fantastic presented in a thoroughly mundane and realistic fashion.
From a Watsonian point of view, you get spectacular sunsets when you have unsettled weather. Tatooine might have dangerous sandstorms but the photogenic clouds at the end of ROTS would hardly be typical.