just so we're clear, you believe they exist now, right? I'm not sure where you're getting your info about residential bandwidth not being enough. Even when hosting the game uses less than 1d 1u. The average residential bandwidth is over 3x that amount.
A simple Google search will also show that dedicated servers are notorious for lag as well, so we can wipe that one.
And, if all is working well the host does NOT have an advantage over anyone. So there goes that one too.
Edit. I must have missed the part about the host leaving. You're telling me you've never seen a host migration in cod?
Edit 2.
Your 16 ms statement is also false. 16 ms is 1 frame, in the case of cod, and NO ONE would notice that. And even if they could you wouldn't be able to blame it solely on lag because the frame rate itself varies by more than that on a regular basis.
it kinda looks like you randomly searched Google and grabbed random crap out of context and then slapped it all together. That might fool someone with no idea, but anyone with even a smidgen of knowledge knows better.
Also just pointing it out, at one point you say in a listen server the host has a huge advantage, and at another point you say they have a huge disadvantage.
My 5 minutell break I'd over so I'll stop pointing out the falsehoods and inaccuracies for now. I may point out a few later, but I really see no point.