It is all in how they are cleaned and processed. We would field dress them and as soon as we had them home they got washed with the hose, skinned, washed again to make sure as much dirt and any nasty stuff was washed off, fecal matter, stomach contents... anything that was on the hide and fingers while skinning. Then it was cut and wrapped. We never let them hang because without proper temp control it is a total toss up as far as outcome. Now if you have a local locker plant with an aging room then yes hang it for a week!
And yes deer here are corn fed and big!