Never been to India. But Thailand, Cambodia, Singapore, Japan, Taiwan, all use LINE. (and whatsapp) but I have 2 conversations on WhatsApp and dozens on LINE.
Granted I don't know anyone in Australia/New Zealand using LINE. (I live in Singapore)
Asia is much bigger than Thailand, Cambodia, Singapore, Japan and Taiwan; so the statement "Good thing Asia uses Line more than What's App." is incorrect. Also, WhatsApp is still more popular in SG than Line amongst the local population.