Headphones GREATLY "color" the sound and usually emphasize the reverb and the bass. If you like the sound ... try adding more of those two elements and see if it comes closer.
Wearing cans is like taking the room OUT of the mix. You loose the true perspective and it CAN spoil you. You rgear shoul be able to give you a pleasing sound, so just fiddle with the balance, effects and EQ till you get the sound you want!


Or, you can prop the two speakers up on stands at shoulder height, and face one speaker at each ear (from 2" out)..... maybe that'll help !