Still Cube my Secondary Weapon?

Weapons and secondary weapons should be the ones to be aimed for legendary before other equips because of the damage boost they can give on bosses; and also the fact that the difference between legendary and unique pot stats for weapons is a lot.

Yes, but:

1) We don't know the potential of his crossbow for comparison
2) Nebulites could still make up for the difference and more, depending on server
3) That's already a pretty good pot and two boss lines achieved using pot locks would be very effective any way