I recently went to LA on a holiday, being an Australian, of course I took the opportunity to play League of Legends with a much better ping.
Usually I pull 200 ping at best, but while in LA I was getting as low as a 16 ping. The difference was insane, while I may not be a particularly skilled player when I went to America I was an 1100 elo player struggling to get out. The moment I turned on LoL in LA I went straight to ranked and to just have things so responsive and lag free. I quickly rose to a peak of 1414 elo in about 4 or 5 days of playing, this of course raised my confidence for when I was going home. Upon arriving home, I turned on LoL like usual and all I could do was lose and lose. Being back on a ping of 200 compared to just being on 16-18 was just disgusting, my elo has just steadily dropped since then. Just proving to me how much of a difference the ping makes to Australians.