I bought this as a little treat for my 5 year old son and to expand the range of books we can read together.
In this case the book is clearly tied to the (very good) Josh Whedon Avengers movie, so this means no Ant Man or Wasp etc, but you do get nice graphic images and some simple texts that a young child should be able to get to grips with.
As with many of the Marvel story books, I wish there was an effort to create a bit of a story - this is really a sequence of character introductions with pictures. While fine for a number of readings, I expect this to mean that the book does not last that long as a favourite.
Despite my reservations, my son is very pleased with the book and has read through it with me. I expect to be moving up to the level 3 books soon which apparently contain a bit of a narrative.