Average item levels seem to be wrong

[WintersMoondancer]

Is it just me, or is the average item level a bit off when you have to total all your equipped gear and divide by 12 to get the average. Yet some jobs do not have offhand equip-able items and when wearing cowls you actually lose on item level average. Is this "working as intended" or is this flawed? Makes a difference when joining groups in Party Finder and you don't meet the average level required because you have a cowl on and using a two-handed staff.

[ispano]

Cowls count as two items. Also, you only count the shield slot if you're actually using a 1h Weapon. You would also then divide by 13.

[Alhanelem]

Jobs that can't use any offhand item don't count the offhand slot; but it appears that the item level average always rounds down. e.g. I have full ilvl70 PvP gear on SMN but there is only one ring available so I have an i90 pve ring.
(70*11)+90 / 12 = 71.666666... and it shows my avg item level as 71. Correct when floored. The offhand slot isn't used.

Also any multi-slot items like heavy armor, flanchards, and cowls count as the same item level for every slot they take up. So a body armor that takes up the head slot too counts as two items of that level.

The soul crystal isn't counted even though it has an item level (as they're all 30 and would drag down everyone's averages)

[indira]

its just a bad system using average. it should require each slot to be a certain level to do content.
in DF people doing stuff with lv30 accessory's and so on then there dead in one hit.