Amazon’s 1080p streams tend to have a higher average bitrate than other platforms, meaning fewer "blocks" (macroblocking) during high-action scenes like the puddle jumper flights.

The string you've provided seems to be a filename or a torrent identifier for the first episode of Stargate Atlantis, season 1, encoded in a high-quality format suitable for a decent viewing experience.

The word at the end of a filename is a release flag . It implies that the uploader or release group is providing a replacement for a previous version of the same episode. Reasons for a "better" release include:

: Amazon's source files generally provide a much cleaner base than standard cable broadcasts or older digital masters.

The "better" label implies this specific file fixes the major flaws of the standard Amazon encode: