At first I thought, a size of 5MB would be something to explain, but he's right, there is nothing to explain for the simple reason that there is nearly nothing in the map.
A 5MB-piece of music that is already included in War3 and a design map with a cruely slow camera moving through trees showing a very small place with many green doodads put into it.
So, Mitchell, WHAT should this be for

A 5MB-piece of music that is already included in War3 and a design map with a cruely slow camera moving through trees showing a very small place with many green doodads put into it.
So, Mitchell, WHAT should this be for
