This hierarchical grid is successful because it allows for a natural flow of information in the title with room for an image or illustration in the lower third of the grid.
This hierarchal grid is successful because the page is clearly divided into thirds. There is even a rule of third within a third. The middle third is perfect for a pleasing image or illustration for the focus of attention. The hierarchy of the information also flows naturally from top to bottom, enlarging the modules for key words.