Oh look, heavy armor. Let take 5-10 minutes of my time checking 3 of the 4 that can use plate.
Hmm. She doesn't need it. Dismiss.
Summon, I think it may be better for him but I need to check the last one. Dismiss.
Summon, hmmm. This may benefit more for the other guy. Dismiss
Summon, well, I think the previous one could use it more. Dismiss.
Summon, Okay, there we go. Dismiss.
Summon main companion.
Oh wait, I can just sell it and not waste my time. Having varied armor is much faster. One person that can use medium? Give him everything. Another one that uses light, give him everything. No need to compare.