This is ******* bull****.
Time Warner is blaming Microsoft here : http://forums.timewarnercable.com/t5/Connectivity/Horrible-lag-and-disconnects/m-p/85689
This is what my Warzone connection looks like:
Blue valleys corresponding to zero in game connection of course.
The same kinds of drops happen in co-op campaign even though the bandwidth appears to be a tiny fraction.
I want a refund for this piece of garbage.