Tim Anderson is sitting at a 2.3 fWAR SS today. That is #13 amongst ALL SS's in MLB today. His defensive rating at Fangraphs is good for #11 overall. Hopefully by "super sub" you mean he is a middle of the pack starting SS today, because that is where he is. And that is even if you were to look at what is he is doing this year as his peak. If his bat improves and his defense continues to improve, you will be talking about a top 5 SS in all of baseball.