This gives the impression that the current end game is made up only of 3 mans. The most recent instance cluster is actually three 3-mans, one 6-man and three 12-man instances. I think it would also be worth mentioning the many instances that now scale to 85. I think this gives a vastly different picture of the current end game.
Then you have the dungeons. Unfortunately with the release of the hobbit film the end game dungeons for Rohan are Hobbit themed dungeons and are for small groups of 3 rather then the larger dungeons that they have had on offer in previous end games. In these dungeons you can attain star lit crystals and tarnished crests. You use Tarnish crests to craft nice legendary weapons and a horse and you use star lit crystals to upgrade these legendarily. The legendarily can each be upgraded three times and increase the power of the weapons/horse to give you that edge.