League of Legends is a successful trademark on the mmo's market. And in the table below it is visible immediately that it is very true. Data are taken from the latest analysis of Superdata.
You can see that LoL will easily earn more than $1B in the remaining 3 months to come. So the yearly turnover will be much higher than in the table. It is also quite interesting that many older games are in top 10 like Lineage 1 or Counter-Strike Online.
And even though we can see the constant fight between two big MOBA fan groups (LoL and DOTA 2), it is very clear which game is more successful in terms of turnover.