"Overall, the advantages heavily outweigh the few minor disadvantages giving no competition at all (like an Olympic athlete to an infant that can't crawl)."

Sounds like BS, honestly

So what actually are the Disadvantages of Model-only Levels? I always thought building the World in Blocks (WED) render faster and take less Ressources than Models (plus better/easier lighting and Collision)
Plus i somehow have the feeling its generally Low-End-PC-friendlier, or am i wrong?