They have similar sound signature cues. Their lower mids and lower treble are practically the same, as is their bass (though it is a bit tighter and faster with the HD700).
That's what I've been saying. The HD700s aren't $1k headphones, they're roughly $400 overpriced. Not to worry though, when Dakmart starts blowing them out at $599 they'll be a decent value.
Weird, what I heard is totally the opposite.
Also, if you calculate cleanness and detail retrieval as part of headphone's technicalities, I think HD700 deserve for their price right now, as I never know any headphone around 600 bucks can as good as HD700 at least in this two factors.