FYI it is simply the bump in the mids of AT cans that make the vocals sound closer. You can achieve the same effect with any other pair of headphones with a simple EQ... there is nothing magical to AT cans. Not saying they don't sound good though, because they really do! But no voodoo here.
I can vouch for the vocals of the LCD-2 being superior to the W1000X. I really liked that headphone -very much actually. It does many things exceedingly well and is nice, rich and musical overall...but the mids of the LCD-2 are simply better. Quicker, more detailed... better decay, better tonality.. any way you look at the mids (IE where the vocals lie) it is a better experience on the LCD-2 in any quantifiable variable. Now, the experience as a whole I can't tell you, you would have to listen for your self, but if you focus purely on vocals... you really can't do better than the LCD-2, especially when compared to any AT...
And if you really can't live without the AT colouration... just EQ the LCD-2 in the mids and you will have the best AT to date instantly!