I'm not sure a team of say 10 devs would come up with a unanimous stack rank of their co-worker's productivity. From my own experience, everyone would probably

I'm not sure a team of say 10 devs would come up with a unanimous stack rank of their co-worker's productivity. From my own experience, everyone would probably agree on #1, #2, and #10, but most people put themselves at #3 and the person they work with most closely at either #4 or #9.