Thanks for the explaination, I did not know of the max values per stat.
Regarding number near the icon, I just realized that is my current level in the profession.

Still, both the LTW and the WVR items have the same ilvl, which means that the weighted sum of the attributes (both current and max) must be the same, otherwise ilvl loses all its meaning as two items of different power can have the same ilvl.
If the numbers for max stats HyoMinPark wrote are correct, then there is a bug in the allocation of the maxima, as GP and Perception max are the same for the pieces in his example, but the Gathering max is strongly different, meaning "Gaganaskin Gloves of Gathering" is stronger than "Bloodhempen Trousers of Gathering", even though they have the same ilvl.
I know that the gear slot in many games applies a scaling to the bonuses, so a "glove ilvl180" may have lower stats than a "chestpiece ilvl180", but here the gloves are stronger than the trousers, which is counterintuitive considering what games in average do (which is to weight the ilvl bonuses via the "size" of the item on the model - that is, chestpiece and leggins are the stronger pieces, followed by helm, gloves and boots (not necessarily in this order).

In conclusion, maybe it's not a bug but a weird choice of weighting the ilvl of gloves more than that of leggings, but being in doubt I think it's best to leave the bug report open, for the devs to evaluate it.