Did you know that when you watch pay per view on your TV using comcast it runs on the exact same lines as your internet?
So are you saying comcast can not provide pay per view?
They can not prioritize the internet part of their service "network traffic", but as you yourself proved this service doesn't use your internet bandwidth, even if it uses TCP/IP. It runs using its own section of the cable line. It doesn't matter that it uses DOCSIS, or TCP/IP. Comcast is well within their rights to use their cable lines for TV service.
> it's about them offering services which third party providers "can't,"
Yes, that's true - comcast offers cable TV, and other providers can't. Shouldn't you be complaining about that too?
The difference is this: I pay for internet bandwidth - comcast can not then use that bandwidth in a way that prioritizes their own services. But if comcast wants to provide me extra bandwidth to my house, and then run a service over it, that's perfectly OK.
BTW you should get kudos for including all the data in your post. I'm arguing with you using the data that you yourself gave me, which isn't a great way to argue (I should really go and get my own data). So you get credit for that, but I'm sorry, your conclusion is just incorrect.