Morchok: Since i got that one to 40% at the end of Cata with 85 it wasnt a suprise to kill him pretty simple. It still is a kinda close Dps race that forced me to eat all stomps for enough vengeance to beat the 7 min enragetimer. but overall its just outgearing.
Yorsajh: I took 0 Physical dmg on that fight. The only challenge here also was the enrage.
Its normally not my style to beat boring "beat the enrage" bosses with nothing else but since i want to do any possible DS boss im gonna do ANY possible DS boss.
He is another Boss in which just gear is important. Even though my gear wasnt enough for his enrage i could still beat it with some vengeance increasing tricks such as /sit /deathstrike macro (lol)