Originally Posted by jibzilla
holy crap we have some waaaayy different ears
I think that is the key issue. I don't anyone would say the Mad Dog is a bass head phone, nor would it be described as bright. There's pretty much a neutral/dark consensus.
Soundstage not so much...
I am sure we perceive soundstage very differently for many reasons. The shape of the pinna, for one, will interact differently for different users, affecting how the wavefronts enter the ear, and headphone proximity to the ear. Also, source can and does impact the sound. Live soundstage is quite different from synthesized effects in a studio, live material has very subtle cues where studio is more in the face (generalization, I know). I personally rely more on acoustic recordings, preferably not too closely miked, to hear the secondary ambience/audience to feel the hall size and space.
I think my perception is closer to jazzerdave, but it may be anything from music genre, to the amps or to us just having similar ears, or maybe we define the cues we call "space" in a similar way. It'd be a great topic for sound science, but it's probably about as far as taking it here can go, except that it's pretty obvious there's not a consensus on that point, except that regardless, it's just one of many factors to consider.