I have the shittiest work ethic and still get 5+. I even got a 7 last review. It seems the less work I do, the better I am ranked. I feel like I'm living in a Dilbertesque parallel universe.
If you get a 1-3 you must either be a giant turd to work with or are clinically retarded. Or both.
And if you get a 1-3 it is probably writing on the wall that you need to GTFO... seriously, why even bother if your coworkers are obstacles and are not enabling you?