DiMarzio intended this is a special use middle in the case that it's much lower than the neck and bridge.
But if you look at the specs, it's a little monster for a mini. Similar output to a '59 bridge or Air Classic Bridge. Still has the standard mini bite and snarl due to the Neo mag, in spite of the high (for a mini) output and DCR. Sounds like a great mini, plenty meaty in on low note chords and plenty bitey on the high notes, and with far more output than other minis.
I've been going through options for mini and P90 routed guitars, been through 20 pickups or so for that position, this one is by far the best I've found for a bridge. Still sounds like a mini (if you want a sound like a full sized bucker, use a full sized bucker...), but has plenty of output which most minis lack.