I for one would be curious to hear about the difference between a Dimarzio P-90 size
Humbucker and a Gibson Mini Humbucker...
specifically, I wonder if there is one. Seems like there probably would be, since
the construction of the pickups is different. But I'd like to hear about it from someone
who has played both. I'm familiar with the Gibson tone.
The DiMarzio is pretty crunchy & thick, fairly hot with a little bit of the trademark DiMarzio vowel sound, though not to the point of cocked-wah tone like some have. It's overwound and uses a ceramic magnet. These were billed as equivalent to a Super D but they aren't quite
that fat, and they feel stiffer under the fingers IMO. As I remember the Super D had a pretty natural feel for a ceramic pickup. (Full disclosure - it's been many years since I used one, but that's the way I remember 'em.)
I can't speak from experience about Gibson mini hums, either new or vintage - I've owned a vintage Firebird, but those have blade pickups.
Still, I'd say you're likely quite correct in thinking that they'd be very different animals.
I'll be replacing the DiMarzio with a Babybucker from RioGrande - also a mini hum, but one based around an alnico mag. I believe it's wound with superthin wire.
Rio tends to do well at balancing fatness with vintage/crisp mids & highs in their full sized humbuckers. My McNaught came with a Texas/BBQ set and I liked them enough to get another pair for a different guitar. They're strong enough to give some extra push but not so hot that they get midrangey & compressed like high output humbuckers. Bought a Muy Grande Tele set after that, and then a custom humbucker made from two Strat coils.