I have never played MoP so I don’t know what to expect about raiding difficulty - what do you think about it? Harder than Cata raiding?
the first raiding tier of mop is about the same as dragon soul in general, if not slightly easier on some bosses as there are about 20 bosses within the tier (MSV as the starter raid, heart of fear and terrace as the real raids)
then the difficulty/ complexity spikes upwards
Difficulty depend alot from your raid composition and DPS , alot of fights ca be made easier by having specific classes or solo tanking solo healing and killing boss befour he do his mechanic
Overal Finall bosses of Raids, Amber Shaper in HoF, Dark Animus in ToT and Siege crafter in SoO are hard rest are between easy to moderate difficulty