They have this kind of methology on how did they arrived on the conclusion.
If you will notice, Top 5 are the those 1st world country and the rest specially
the bottom 5 3rd world.
Here's the top 5 (out of 22). Just look at were your country at and you will
be the judge
1. UK
2 USA
3. Italy
4. France
5. Japan.
Here's the link:https://www.888poker.com/infographic/luckiest-countries/
Enjoy
I will say their ranking is just based on the total number of participants they believe are coming from those countries they listed. It will not surprise me to believe that majority of their players might even be from the least lucky states but are using proxy to access their sites and the likes. And it could also could be that its where the popularity of the sites survey are based among other factors...