A ping just tells you that you have a connection with the server, it is unreliable at best for any data on connection quality.
This tells you, per hop, how your connection is with the server and all the hops your ISP takes between them is.
It also tells you which hop it is that might be causing lag problems.
If you download the program, put in the IP adress of the server and let it run for, let's say 1000 or 1500 packets you should be getting a reliable image.