Packet Loss at langbprj01-ae1.rd.la.cox.net

I reviewed your ping plot, and I think you may have misconstrued the information it's showing. If you think about it, based on your conclusion, the last hop that shows google services is a 100% packet loss, is your problem. A ping, is the lowest form of communication, and if a Router is busy, it will not respond to a ping request, since it's busy fulfilling it's primary function of routing data. 

Additionally, the hop you point to as an issue as well as the next one, when it responded to your ping request, did so in under 20 thousandth's of a second. That's phenomenal. 

Blizzard has done you a disservice suggesting that the ping requests and traceroutes are a good method of determining lag. The ONLY thing that a traceroute can determine is the route your data is taking. As to WHERE the disconnect is taking place, it's difficult to determine. 

See if Blizzard has another server you can try to access, that may have a different route for your data, and see if it's an issue. Also, ensure your gaming system, be it a console or PC, is connected via ethernet, and not WiFi. WiFi can be interfered with by Cordless keyboards and Mice, Game Controllers, Baby Monitors, Bluetooth devices, Microwave Ovens, RC Toys, Garage Door Openers, all of your neighbors devices as well as their wireless routers, as well as EMI and RF from fluorescent lights, and other things. Use a program called WiFi analyzer on an android phone. It will show you the WiFi routers around you, the bands they are on, as well as their relative strengths.