Flown both will say this.
FMC better on bus
Electronic Checklist / Abnoramals better on 777
Handling ( especially in gusty and crosswind conditions 777 is better)
Daily opps , airbus is less busy. but abnormals bus is way busier and more complicated.
Seat is far far superior on the bus , 777 is awfull.
Ride , way better on 777.
Economics , well you,ll have to ask the beancounters.
But had 476 pob yesterday on 777-300er , most I ever had on the A332 was 290 odd. But again 5500 kg,hr v 8000 kg,hr +- . who knows ?
I do know this going into Hong Kong in the typhoon I was so comfortable in the 777 ( done the same roller coaster in the bus before). So the 777 although dare I say is no where near as clever as the bus , it really delivers when it counts most.