The fact that you only have 5k crit is very bad. Higher crit means more Elusive Brew procs, which means you get a higher avoidance rate, meaning you're going to take less damage. If you can replace your Rook's trinket, you'll probably be better.
Now, having said that, for Garrosh 10N, your gear isn't bad. Drop the Glyph of Guard, as Garrosh himself will do more damage than the Whirls and the tank dot would. Pick up the 3m Orb glyph so that all of your Gift of the Ox orbs last 3 minutes, giving you a bunch of healing orbs on either side of you. Take the tank (stamina+20% DR proc) meta, as the proc will be very helpful. I can switch your gear around a bit and you'll gain 16% crit, which would increase your EB and would lower your damage taken.
You don't need that additional 4500 stamina that you have gemmed for though, as it is actually having a negative effect on you and your tanking requirements.