Some interesting data here. Mostly about how skewed the results are do to a certain activity. For instance:
27,473 level 50 Brutes
11,362 of them not Fiery Aura leaving 16,111 that are.
Brutes have logged a collective 19,259,936 hours
Non Fiery Aura Brutes have logged 5,252,297 hours leaving 14,007,639 hours played solely by Fire Brutes.
With a combined total play time of all characters across all levels you have 47,370,758 hours played. Fiery Aura Brutes represent 29.5% of all hours played.