Batman Begins is a pretty good movie, especially compared to most superhero origin films, with a well executed arc for Bruce Wayne, a villain with a significant connection to it's protagonist in Ra's al Ghul and some good themes on psychological fears in how Scarecrow and Ra's work as villains. Not many negative things I have to say about it.
The Dark Knight is a film somewhat deserving of it's hype. The thematic debate of ruling with power or compassion can allow it to be compared to a modern version of The Brothers Karamazov as well as a good development for Batman's character in how he has to learn to take a far more merciless attitude towards villains than at the start after the fall of Harvey Dent. The Joker is also superbly executed with his actions making him one of the best takes on a villain or psychopathic character in film. The movie indeed has faults though, with the Joker's plan to cause Bruce's ultimatum between saving Rachael or Harvey would've taken too much time to organise and he overlooked a lot of variables that made it even working a large convenience, with every single step needing to go exactly as planned to work with no backup plan. You also have some smaller questionable areas such as nobody seeming to be in panic over a school bus busting out of a bank and casually joining the line, or Batman getting past almost every level fo security just because he's Batman. Also Twoface is a boring character due to his change simply being a reaction to one tragic event that comes to define him.
Then there's The Dark Knight Rises, which has quite a few problems. Though it starts well with great build up, good characterisation for Bane and a good fall and rise for Batman, though being stomped by Bane wasn't anywhere near as engaging a loss as falling prey to the Joker's tricks. However, things instantly go downhill to rock bottom after it's revealed Bane isn't the mastermind with Talia having no romantic connection to Bruce despite having sex with him when it wouldn't serve her purpose like a slut, Bane being disposed of in a very disrespectful and anticlimactic way and Bruce surviving the bomb without any explanation.
Batman Begins - 7/10
The Dark Knight - 7.5/10
The Dark Knight Rises - 5/10