Its not a matter of the importer being screwed up as much as a matter of what use the big 3D software think the .obj format is. Most 3D software makers consider the .obj format a rather obsolete format. They all have their own binary formats which are hugely more compact and allow much more information storage. including the ability to save whole scenes with lights morphs cameras animations, and so on. In contrast the .obj format is a bloated text based format which has only one purpose, to store point information. .obj files have in a large part been relegated to a second rate 3rd party mesh exchange format. Even maya the originator of the .obj format considers it a red headed stepchild.