It makes sense. Comcast is directly paid off (I mean peered) with Netflix, and they overprovision intentionally. See https://www.dslreports.com/faq/15643 if you are curious.
That link (https://www.dslreports.com/faq/15643) seems to be a list of Comcast's available bandwidth speeds, and doesn't mention Netflix or peering. Did you intend to post something that describes the interconnect agreement between the two companies?