MU longevity is very impressive. As you said it's doing better in some western countries, MU was played on the radio a lot where I live unlike Butter.
Butter is much bigger in Japan and Korea though. It's even a bigger hit than Dynamite in Japan, IIRC?
MU will need some time to catch with Butter spotify streams because Butter's start was much stronger. We will see which one will be the fastest to reach 1 billion streams....
Nope. Not even close. Dynamite is still covered by Japanese popular artists and is still on the Japan Karaoke chart. Butter is already off the list.