Some people say that World of Warcraft's visuals are outdated. The game's graphics haven't been updated since launch, they say. In terms of some older art assets, I would agree, but the overall picture is a different story. The system requirements when WoW launched were a meager 800MHz CPU with 256MB RAM and a 32MB graphics card. Today, the bare minimum requirements are a dual core CPU with 2GB of RAM and a 256MB graphics card.
Mists of Pandaria requires an expensive computer to run smoothly at the highest possible graphic settings, and yet it will still run on hardware from 8 years ago. Do you know of many other games with a spread like that?