Uh....The gap is so wide between lfr and normal mode it feels roughly akin to dropping a pencil down a mine shaft. In fact it feels greater than the gap between normals and heroics in previous expansions. It would be closer to call LFR the new normal and everything else just hard. Closer but not exact. Normal should have some challenge and lfr is a pushover by and large but the alternative normal raids are to hard. The concept of medium difficulty escapes Blizzard.