Cant really quote from a phone, but anyway, to the dude saying "its easy in blues", you bothered to check that link?
"Marrowgar night", not "4 tries and a kill", but a whole night (3h raid time) on one boss.
Saw the bpc? 3 Tanks, 4 healers. (Perfect moment for that "2 hpalas in a raid is a good thing" guy to hop in)
It IS doable, but in no way is it easy. Yes, it can be easy cleared with average of 5k, some over, some under, as Mercy said ilvls 232-239 would be ok for that.
But then you get a dk in frost presence dying, hunter with no aspect (or viper, they really like that), demo locks with no pets, shamans with no totems and similar crap. If they did their job - sure, doable, but here most likely not.
The other day I queued rdf as a healer, got pos. This damn warr tank was like 3.9k, but hey, lets go. Had one dps to carry the rest, but what was amazing is that the warrior took less dmg than many better tanks Ive seen in pos. I dont know how, I dont know why, was he lucky dodging? Parry? Block? No clue, but it was really nice healing that guy. Thats a tank that'd be nice for low gs raiding.