I would say that the SRH940s are amongst the worst headphones I've heard. Simply way too treble tilted and bass that is AWOL. Sorry, can't agree with you here. They are amongst my "most hated" headphones ever. The SRH840s are "nice" closed headphones and quite a step up from the 940s. But they are both leagues below the Momentums.
I don't know where the conversation even came up about the SRH840 or 940 vs the Momentum. Two different cans for different functions entirely. One is meant for critical studio monitoring. The other is a fun portable can with a colored sound. So in that sense, they aren't comparable. That being said, the SRH940 is below the Momentum in terms of sonics?! Hehe. No. Absolutely not. We can agree to disagree on that one.