Timor-Leste is 2.6 times larger than Brunei.
Area: 5,765 km2 World Factbook
Population: 422,675 (July 2014) World Factbook
Brunei, broo-NY or broo-NAY; officially the Nation of Brunei, the Abode of Peace, is a sovereign state located on the north coast of the island of Borneo in Southeast Asia. Wikipedia
Area: 14,874 km2 World Factbook
Population: 1,201,542 (July 2014) World Factbook
East Timor or Timor-Leste, officially the Democratic Republic of Timor-Leste, is a country in Southeast Asia. It comprises the eastern half of the island of Timor, the nearby islands of Atauro and Jaco, and Oecusse, an exclave on the northwestern side of the island, within Indonesian West Timor. Wikipedia