Research firm MoffetNathanson has developed a new quality index for streaming services, and Apple TV beat out Netflix in the very first rankings.

Apple TV trails Disney and HBO Max, but beats all other streamers in new quality index

Engagement is the metric that many streaming services use to measure their success. This focus on “time spent” helps explain why Netflix’s founder once said that the service is competing against sleep.

But since not all types of engagement are created equal, researchers at MoffetNathanson have developed a new “Quality” gauge to judge streamers’ performance.

As explained by Matthew Belloni in his latest Puck newsletter, there are five metrics driving the rankings: