Thanks for reading! I'm not sure if having Bruce make two comebacks was a crucial mistake; as it made sense from a storytelling perspective (hero returns, hero is defeated and must overcome, hero defeats), but you might be on to something. For me, personally, I didn't draw the connection between there being two 'comebacks', so it didn't feel redundant or diminishing for me.
And yeah, it definitely is one of the best movie trilogies of this century. Nolan and crew elevated the superhero movie into an art form.