Industry bodies that rate airlines on safety. Last year Emirates, third equal.
The criteria is safety.
No legitimate response has been received, there's no debate here. This isn't some obscure knowledge thing, these ratings come out every year. You can go and look them up, it took me all of 15 seconds to confirm this.
And I'll even go one further, there isn't a single airline in the Americas, Africa or Europe that rates higher than Emirates on safety.