@reconzero See this is a big factor huh. I'm trying to look at like ttk and damage stats and try to work out what. Based on my experience would be a better shout. (Cause we know our own weak/strength with weapons). Interestingly hemlok and volt had decent damage stats as well as other things, both of which I had a leaning towards.
I'm like you though... I hate in a match I'll be presented with a Hemlok, a G7 and a 3030, maybe even an smg... and I'll be like... but which?! And I think I want to "know" so I can be more decisive in those situations and just know my preferences.
Sometimes I'll judge it on... let's say I pick up a level 3 energy mag, I have a g7 no attach and there's a volt. I'll go volt.
Or I may have a 3030 but not seen a x3 scope. I'll swap out.
But this does mean sometimes I waste space carrying attachs for weapons I might not bother switching to... so it's good to know if I'm definitely looking to switch.
Another annoying thing is you may have like 2 good games killing it with xyz weapon so think "this is my one" then it just stops working for you.