Isn't saying something is the best subjective? What is used as proof to call something the best? Every theme park as its good, bad, and ugly. My opinion may be IOA is the best park, but is it a fact that it is the best park?
IOA is very well themed. IOA has many fun and exciting rides. Potter has only made IOA better. Last year, IOA was my favorite park to visit. So much so I spent two days there, and one day every where else. I never felt bored unlike at DHS.
So to say it is the best, I don't know if that is fair. But if someone wants to say IOA is their favorite park, I can be on board with that!