SPL's built on Chinese ideas they've had for their football leagues. Some euro players went to China but their league wasn't good so it's failed. SPL isn't like them they're trying to be competitive. They've made the SPL famous because they want to host the football world cup.
What makes the difference is that the SPL, through the al-Nassr club, brought in the right player who brought great popularity, namely Cristiano Ronaldo. Because I'm pretty sure the SPL still wouldn't be able to become as famous and widely known as it is today without bringing in Cristiano Ronaldo. Because even though SPL clubs bring in players like Benzema and others, as we can see now, the name that is attached to the SPL and is widely discussed regarding the SPL is Cristiano Ronaldo. Meanwhile, the names of other European star players who have been brought to SPL clubs are in fact starting to become less talked about at the moment. But Cristiano Ronaldo's name continues to be in the news, which as a result also has an impact on the popularity of the SPL.