I've seen a lot of comments on IMDB about specifically this episode alongside "Hero" and "Perfect Game" to be the best episodes in all of Attack On Titan.
If you're a fan of animation, fast-paced action and seeing about all of your favourite characters back on the screen fighting it out, this is absolute eye candy for you! The Warhammer Titan, Beast Titan, Cart Titan and Jaw Titan along with Eren's Attack Titan are all there and make for a visual spectacle like you've last had it at the end of season 3.
For me, personally, these types of episodes are a chore to watch...Nothing plot-defining really happens and I feel, as I have throughout the entirety of AoT, not necessarily attached to any of the main characters and this don't care much for their fate.
For me the show is too fast paced in many parts and does not give enough care to establishing the emotional relationship between characters. As a result, these slash-fests are an absolute bore to watch for me and I would never even consider putting this type of episode even close to the same level as Breaking Bad's "Ozymandias".
But if you got that emotional attachment to the characters, you feel the thrill of an, I cannot stretch this enough, absolutely beautifully animated fight scene and love seeing high-stake fights, this is for you!