Doing savage to get into ultimate content is the best route if you really like WoW raiding tiers, where you have to clear the savage tier to even unlock ultimate. The difference around ultimate fights is while scripted, there is a flurry of jackpot mechanics from things like if you get number 3 you are going to do this, this, and this differently than everyone else and it happens about every other phase. Gear carry isn't really an option because the fight is forever sync'd. Jump-rope mechanics and stuff like if one person messes up, it's a complete wipe.