180 deg fully flat J seats does not necessarily it is better than an angled seat. CX's current herringbone is an example of that where the narrowness and claustrophobic feeling of the seat has me feeling as if I'm lying inside a coffin without the top cover. The comforts of that seat is certainly inferior to some of the angled seats I have flown such as SQ's Spacebed and KE's Prestige Plus just to name few examples.