Server testing

[ [ 'http://[brazilian server main page].com.br', 460 ],
  [ 'http://www.tumblr.com', 881 ],
  [ 'http://[dynamic site at brazilian server].com.br', 1614 ], // weird
  [ 'http://[static site at brazilian server].com.br', 21925 ],
  [ 'http://www.google.com', 112481 ],
  [ 'http://www.google.com.br', 133337 ],
  [ 'http://www.bing.com', 267529 ] ]

Test made with NodeJS via HTTP module, timing in miliseconds. Results may vary.
Question: is best to me to change my website to a local hosting rather to keeping it on the USA/europe?