The cues in the ocean and during the firestorm in the cave definitely fit the scene and sound amazing in the theater, I also love Dumbledore's Farewell cue, both in film and in score. But 3 cues in a 150 minute film don't cut for a good score. It's a 2 star score even though I keep listening to those parts and keep loving them.
A 4-5 star score needs to have perfect cues for the entirety of the film, not just a small part.