Hi.
I see a problem with you right from the start of the test. It looks like you’re connecting via WiFi - if so, try using a cable.
The highest response time already in the first step is very high.
Blizzard’s server nodes are configured to de-prioritize ICMP packets (which are used by tracert, pathping, and WinMTR) so you may see large latency spikes due to this. It simply means that those nodes are delaying these connection tests packets, while your game packets (TCP and UDP) are getting through quickly and efficiently.