LOL @ comparing single player FPS games (whose engine needs to display a LOT less characters and models on screen than a MMORPG) with a MMORPG. Or even more the graphics of a MMORPG with that of a prerendered tech demo.

Ever wondered why every single MMORPG has graphics engines that seem to be behind the times of several years?

The graphics are so lackluster that they're the best in the MMORPG market, currently and foreseeable.