As I stated before, there is no packet loss in your entire test. You sent 506 packets and 506 packets made it all the way to Blizzard. The data for the Blizzard hop at ae1-br01-eqch2.as57976.net is skewed because those hops don’t respond to all ping requests as a defense mechanism against DDoS attacks. If you were actually experiencing a ping of 4k ms, which you are not, you wouldn’t even be able to authenticate/connect to the game.
No. You take different routes to reach different services and games. One route might be laggy, while another is perfectly smooth. More info in the sticky threads at the top of this forum:
Can you take a screenshot of your netgraph in game and upload to Imgur, then post here the same way you posted the blizzard server with the ` marks?