Certain networks, especially Fox, have the tendency to air episodes in a different order than production might have intended. They did this with Futurama, Firefly, American Dad!, etc. As such, you'll get different episode orders between broadcast and DVD/Blu-ray.

The streaming order is different for Futurama because the four direct-to-disc movies were broken into "episodes" for Season 6 for streaming... They might have also aired on Comedy Central in that format.