Agreed. But Online tool would not allow J class from cmb to nrt.
i booked this offline.
i can think of many many many ways to improve on your routing to get more miles.
example, ipc-scl is shorter than scl-bog
also, you should max out on intra europe via doh, like cmn-doh
lax-doh is longer than dfw-doh.
gru lax is longer than scl dfw...