Yeah, very good info.
Fbox is 10 FW to make and can be made anywhere at lower level (lvl 83 Carpentry).
Glowing crate is 3 GHW and has to be made by a spire at higher level than Fbox, dont know the exact level though. Because of the weigh of 50 pounds each you cant do to many each run either.
In short, more of a fuss to make glowing crates but they sure are better...
If we also take the weigh and number of slots into consideration we find out that its almost no difference. GC (glowing crate) has 32 slots and weighs 50 pounds. Fbox weighs 12 pounds and has 12 slots. To make up for the lesser slots compared to a CG, you need to carry around three Fboxes. 3 times 12 slots is 36 slots. That will be 36 pounds. Sure its a difference but not a big difference. You also save two slots in the backpack that is not used by Fboxes.