Country size comparison
compared to
Brunei is about 2 times smaller than Gambia.
Gambia is approximately 11,300 sq km, while Brunei is approximately 5,765 sq km, making Brunei 51.02% the size of Gambia. Meanwhile, the population of Gambia is ~2.4 million people (1.9 million fewer people live in Brunei).
Compare further: Brunei vs. Gambia