Wrath Heroics cleared with everyone in the group wearing full (8/8) Tier 2 armor (lvl 60 from Blackwing Lair) at level 80. Also, the tank is using a lvl 60 weapon and shield for a lot of it. You can tell by the health of the characters in the unitframes that this is legit, and not using transmogrified armor.
Since WotLK heroics were so easy, even when playing the whole group myself, I decided to do it with everyone wearing full T2.