Al Gershwin wrote:
www.britannica.com/topic/List-of-religious-populations
Looking at religions (v sport) - it seems that sport is a lot more popular!
The data doesn't show anything of the sort Barney.
It shows that, e.g, football may have more followers than Christianity by a region. However, both charts just break down global population by the most popular sports and religions.
The data shows the same "popularity" for religions and sport. Because it is measuring populations by association, not commitment to rugby or zoroastroism.
In other words it is click-bait that shows no more than vague associations.
You don't think they polled everyone in the world, right?