The weapon/armor lines that are wrong are always wrong, independent of whether the unit is friendly or not. But since the equipment is always displayed even for enemy units, I think it's not really that significant that the weapon/armor lines are wrong for some items.
I think it's a good idea to always have a look at the equipment of all enemy commanders if you get the opportunity. But that also helps get turns into the 2 or 3 hour range when there's a lot of battles happening
.