I believe that most people dont argue about the numbers, he stated that this list is the way to progress. Meaning that people should start with garalon and ambershaper heroic then feng etc.
Most guilds go for stone guard feng garalai elegon bladelord. Beyond this point its either Spirit Kings WotE Windlord or garalon. I hardly think any guild would say" Hey we got 5/16 hc lets do protectors elite hc"