Is BR this bad (or good)? Or, we all have personal bias for or against some airlines based on our limited individual flight experiences?
I don't trust Skytrax but I cannot find any reliable or even scientific bench mark that can measure airlines rating properly (similar to JD Power). The problems of this kind of survey is based on PAX loyalty, expectations, and experiences.
This is like asking which one is better: MS Windows, Apple OS, or Unix based Ubuntu? It really depends on how each operating system is chosen, for what purpose is used for, and did fulfill the end users' needs.
Bottom line, BR may or may not deserve 5 stars but Skytrax definitely needs to have a more trust worthy system of collecting data that majority of us can feel somewhat reliable.