Just adding here the official poll made by Blizz to answer this very question
It was the favorite and the sample size was more than 10000. So yes there is measurable data and it’s right to say M+ is the most popular game mode.
Just adding here the official poll made by Blizz to answer this very question
It was the favorite and the sample size was more than 10000. So yes there is measurable data and it’s right to say M+ is the most popular game mode.