in the lethal and tactical section of the loadout, there's a column for viewing, and a column for equipped
what does viewing mean?
This gives you the stats of the selected item, in this case lethals, so you can compare it to the item/weapon you currently have equipped.
why does it have to be two 0s below it it's very confusing
just make a column with the number of times used and hits instead of 2 columns
Two columns .
first one is Viewing ( this has the stats of the equipment you are looking at. If you haven't used it before it will show 0 uses, 0 kills.
Second one is for Equipped ( this has the stats of the equipment that is currently equipped. If you haven't used it in game yet,, it will also be 0 uses, 0 kills)
To add to above.
if your stats are. Used 20 ,,, kills 5 --> means that piece of equipment gains you a kill 25% of the time you use it. So if an unequipped item has stats of Used 40,,, kills 20. --> you should be using that one as your getting kills 50% of the time.
Adding onto that...
You shouldn't always pick a weapon based on your current performance numbers with it. Call of Duty is also about feel, and not just about numbers. When I started off with the AK-12, I had a negative weapon KD, but I continued using it and now, I always go positive with it and the weapon KD changed.