Many people make some Diablo 3, Dota 2 style games taking place on outdoors , or a small game with outdoor regions you will need vegetation painting tool and rendering system that is fast ( Trees LOD, distance based for grass etc ...)
Unfortunatelly, there is lot more graphics options and features on others, things like global illumination, physic shaders, shader editors, soft particles, Tone mapping, Color gradding, God Rays, Water system, animated sky etc ...
LE3 advantages is cheap without restrictions and no royalties , and staying very easy to use. Still performance systems , faster lightening and enhanced graphics like global illumination should be considered at some point.