Ferals are still fairly strong, but everyone that isn't a Survival Hunter is struggling to compete in Battlegrounds right now.
Rogues don't have any defensives, and they lost their mobility in 7.1 - basically you have to play nearly perfectly to have any noticeable impact on battlegrounds now.
Also, it would be better for you to ask a new question in the same thread as your old post. The less forum clutter the better - but you're fine for right now