https://en-forum.guildwars2.com/discussion/96750
This is a result of:
1. Set benchmark for sustained DPS
2. Set benchmark for burst DPS
3. Set benchmark for sustained recovery
4. Set benchmark for burst recovery
5. State intended goals for specific abilities (is this burst DPS or sustained DPS etc)
6. Set benchmarks for hits-to-kill for power (burst) builds against different mitigation subsets
7. Set benchmarks for time-to-kill for condition (DOT, sustained DPS) builds.
8. Set benchmark for ease of use for utility (longer/shorter cast, longer/shorter cooldown etc)
9-?? Im sure theres more...