At http://ping-test.net, I found that the ping is increased by the delay introduced by physical link between two routers. Therefore, the large latency is visible in case of intercontinental connections where very long fiber links are used.
I had this idea that wired communication was faster than in case of wireless. Specially, if it is a fiber optic cable. Therefore, won’t it be more feasible to have communication between different countries through satellites rather than having long physical cables?