ok lel
No, it isn't.
13 def + 17.5 replacement runs + 2 positional = Like 3 and a half wins without the offensive component. But the thing is that he put up such terrible numbers that if you extrapolate them you get -35.7 offensive runs and that's like -3.5 wins. Which means, shocker, replacement level. I have no clue if I did that right but meh