Originally Posted by
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Be careful when booking NH from the west coast: LAX/SFO-NRT is operated by their 3-4-3 77Ws, only LAX-HND is 3-3-3 for now. Of course UA's SFO-NRT is the 10-across 77W and LAX-NRT is the 9-across 789, so they're as bad as NH if not worse, but this kinda reduces the difference between the two airlines, especially with E+.
NH has 2 configs on 77W: 2-4-3 features hardshell economy seats, and 3-4-3 features regular economy seats.
In either case, OP will need to compare UA E+ 3-4-3 (or 3-3-3 on 787) with regular econ 3-4-3 or hardshell econ 2-4-3.