MLBN Flexin' their "Sabr" chops: Base Rate

The Lodo Magic Man over on Purple Row pointed out MLBN introducing a new metric they called "Base Rate" or something similar.

Their formula reads as follows:

OPS-AVG.

That's it.

Now, there are two ways to look at this. OPS-AVG could be looked at as SLG+walks (or just the IsoD), or it could be looked at as OBP + IsoP.

My immediate reaction was to eschew it, thinking "well, we have wOBA, why do we really need something else? Linear Weights own." Some very brief discussion followed, and Rox Girl brought up the point that OPS double-counts singles, as they appear in both OBP and SLG. So at least it seems there's some merit.

What I've noticed is that it over-rewards guys with low batting averages. Pujols and Fielder appear near the top, Mauer and Votto are definitely on there, but BaseRate provides some surprises.

Here's the top-10 in the majors by metric:

I'm not much of a deep thinker, or someone who formulates metrics, so attempting to figure out what exactly is wrong with this ( or why I should be accepting it) isn't really my strong suit, so I'm turning to the minds over here at BtB.

Just for the record, I'm not suggesting this should overthrow wOBA or anything, I'm pretty on board with linear weights, etc, but I'm wondering if BaseRate can actually provide any value that isn't completely redundant or overly faulty.

(If this has been discussed already, I'll delete this. I ran a quick search to see if there was already a discussion, and I haven't seen anything.)