If calculation is so simple, all the countries in the world can save billions of dollar every week for employing advisers and think-tank.
The quality of life for a person who earn RM3k live in Malaysia and S$3k live in Singapore are different. And, not everything is cheaper in Singapore based on number. How much does a doctor charge for diagnostic a children fever? How much does car cleaning service charged? The list goes on. I don't live in Singapore but I did stop by few times. Just pity those who work in Geylang by standing on the street, earned S$20-30 and hour compare to ours cheap cheap also RM80-90. There is no definition on live in which country is better. Only can know that when you have your life there and feel it by yourselves. I can't imagine what will happen to me if I live in Singapore and shoot some bear cans with my Delta Elite in front of my house.