You don't speak for them. Cost is a major factor in the purchase of air conditioners.
Chinese cities may have higher latitudes than West Asian and South Asian countries, but their humidity is higher. Same for the other East Asian places like Japan and Taiwan. Bangkok's temperature is not lower than Singapore's. And suppose the temperature of Beijing happens to be lower than New Delhi, Karachi and Riyadh, the real feel temperature may not be lower due to the lower humidity in those countries. Similarly, when the temperatures of Kuala Lumpur are 31 and 36 in New Delhi, the real feel temperature could be comparable.