from what i have noticed attributes dont do much on a mele weapon i had 1 atrribute and on a duplicate of that weapon i had 200000 and there was no diffrence but for my gun the was +100 damage diffrence.
just go into your skill tree and instedd of hitting max all go through what the say and if you see one that says damage increase hit the + button because max all sets it to 3 and other stuff to 16 but if you do it manually by hitting the +s you can get other stuff above 3
i just started using dice 2 days ago so if this isnt much help then mabey the best thing to do is experiment with the attributes and if you want a gun thats on bullet kill click on it go to mod and change it to devs craft 4 i think thats what you call it it will be called the mind blowing then what ever your gun is caled when you put it on