AOT is entry level shounen wank
And for 99% of the population this line means gibberigobblodygoop.
Attack on Titan (or Shingeki no Kyojin for those in the know) is a typical action heavy 'shounen manga' (or Chinese Comic) aimed at teenage boys (or man-childs) where the protagonist is usually a teenage boy who gains some kind of special power or gift who then has to fight against some overpowered enemy. In this case kid who gets angry a lot fights 60m tall giants with a razor blade and lots of string.
The original poster is trying say that this is not a good example of the genre apart from the fact it's insanely popular and violently fun to read. They also provide no counter examples to say what are "non-wank entry level shounen"
AoT anime is great. I'm not sure how this adaption will be as like Zarjazz said they don't show the grapple device combat. I also wonder how they will ram so much story into a movie.