It is practically and theoretically impossible for Comcast (a residential ISP with asymmetrical connection speeds) to have a balanced traffic relationship with

It is practically and theoretically impossible for Comcast (a residential ISP with asymmetrical connection speeds) to have a balanced traffic relationship with any Tier 1 ISP. Every typical internet behavior of a Comcast subscriber follows the pattern of sending a small request, and receiving a large amount of data (webpages, music, video, etc.) in return.