This question appears in the 'How to pass your Cathay interview' book - perhaps why the Q was asked. I gather, the official answer is the front units - dunno why.
I've noticed the downwind brakes getting hotter on the EICAS page too. I suspect it's because the into wind wing generates lmore lift therefore applying more downward pressure on the downwind wheels making the braking action more effective. After all, the main reason for deploying spoilers on landing is to apply weight to the wheels earlier and make the brakes more effective.