Agreed. I flew on the NW World Business Class plenty of times on long haul tpac. Those seats were angled lie-flat - so the seat would extend to 180 degrees but be tilted so your head was still up higher than your feet, but at least it went so you could stretch out, and I found it pretty comfortable with the pillow. The DL premium select seats don't come close to going flat and as mentioned there is significantly less pitch so when the pax in front reclines then you can't really move and the display is in your face. Reminds me of F on the 739, or even the A321Neo.