Keep in mind that OTA television is using MPEG-2 instead of the more advanced H.264 video codec - roughly double the bitrate for the same quality.
As well, OTA is somewhat inefficient with duplicated frames, as all 1080i content is broadcast at 1080i60, whereas Netflix can encode content to the original frame rate (i.e. 1080p24).
As well, OTA is somewhat inefficient with duplicated frames, as all 1080i content is broadcast at 1080i60, whereas Netflix can encode content to the original frame rate (i.e. 1080p24).