Yes, you said ONLY Operator IX is easier on 16 ... not according to my experience. And the whole "16 being harder" certainly does not pertain to EC HM, Kephess HM being the case in point.
For instance, please tell me why Writhing Horror 16 HM is harder than 8 ... you do realize you still get two debuffs to dispel, right?
So, yeah, stop making absolute statements because at this point you are just butthurt Bioware does not pat you on the back for doing 16. You do realize they've stated 16 man Ops are supposed to be easier by default, right? I am not saying they are (this is certainly not true for EC NiM or the last boss of TFB HM), but I am saying whining here will grant you absolutely nothing from a company that has a totally different philosophy than you.
I'm sorry to burst your bubble but Bioware have also said that accuracy is useful for tanks, which is clearly untrue. Don't take what Bioware says to be the complete truth. I can guarantee you that 16 man is harder.
Also as another point: On 8 man the 2 tanks have 1 million hp each, 2 million in total (taking these numbers from videos) . Lets say dps have around 280 (numbers from 16 man, could be wrong) seconds of dps on the tanks, that means each of the dps needs to do around 1400-1500 dps (assuming 2 tanks= 1 dps). Lets compare this to 16 man: each tank has 2.5 million hp each, adding up to 5 million. Again, saying dps have 280 seconds to kill the tanks this leaves you with each dps needing to do aroung 1600+ dps (assuming 2 tanks = 1 dps). Correct me if im wrong but there is a clear dps requirement difference here. So to everyone saying 8 man is more of a dps check, please, prove me wrong.