LFR is just too ez, it's more like serving as a stepping stone for those who want to go raid. You can basically ignore a boss mechanism and go tank and spank all the way. I'm aware of that after my group tank who completed 4/8 in LFR kena tiao by me until sky high when he tank for my group last night. I suggest those who want to do NM know the difference between NM and LFR and learn the "actual" mechanism.
lfr are different beast from the actual raid, which the bosses are nerfed and certain skills removed to cater for unorganized group. it's somewhat of a 'training room' for dudes whose preparing for an actual, painful one.