This is a great and tight bridge pickup, especially for a passive one, in combination with tunings below Drop C. It has really pushing mids and highs, and even the low-mids are present. However, the lows are quite reduced compared to the other frequencies. This imbalance is perfect for some situations and not so much for other situations.
When I compare it to the Seymour Duncan Distortion, it certainly has less lows and much more mids, leaving, perhaps, the highs untouched.
When I compare it to the Seymour Duncan Black Winter, it has much more lows and highs, also having less lows. I find Black Winter a winner in this battle. However, the mids here is something that I'd personally try to add back to the Black Winter pickup. This is why I ordered the Seymour Duncan Custom Shop to produce a Necromancer pickup, a combination of Nazgul and Black Winter. I believe it will have a great balance overall.
All the comparisons I did on the same exact guitar, rewiring the pickups every time, going through the same signal chain.