Yeah, some JL 787s still have the old slanted-flat paired seats, which are nowhere near as nice as AA's. Plus, AA provides PJs and bedding in J, at least on some flights (I'm not sure what AA's specific policy is as to which flights get them). Update: according to the JL Sky Suite route page, DFW-NRT has the 787 Sky Suite four days a week: Mon, Wed, Fri, and Sun.

Or, you could route via JFK, ORD, or LAX, which has daily Sky Suite 777 service. JFK has the advantage of a longer flight, so more time to sleep and relax.

I'd opt for JL's new Sky Suite product over AA's, personally.