Two totally different programs. I use lightroom more as an orginizational tool, my work flow generally consists of importing to lightroom, marking good ones as picks / bad ones as rejects to be deleted later / do nothing with the okay ones, I then take the good photos and do some basics white balance and exposure editing, anything more and I usually tether (right click, edit in) into photoshop. And the way you suggested made absolutely no sense to me.