To answer your question- IT DEPENDS. The
MA2 and
Mini2 share some features. Ocusync 2 connectivity. 4k video with other camera features and similar controllers. They both use the GoFly app. But they both have their strengths. I have a
Mini 1 and can tell you the major weakness of the Mini1 is flying in higher winds. It is my opinion that DJI has addressed this in the
Mini 2... but only to some extent IMO as the batteries pump a bit more power and the angle but I'm not sure how, being so small and light can be any better in terms of stability. The battery pumps a little more power into the motors and DJI has increased the maximum angle of attack (I forgot the technical term) where it can more effectively fly into stronger winds. And while an improvement, it cannot beat the
MA2's ability to withstand winds and gusts because simply, the
MA2 has much stronger motors. I found myself sitting out many days with the Mini1 due to stronger winds and believe it won't be that much different with the
Mini2.
The
Mini2 is a great entry level drone and yet the camera can provide professional quality images and video. You can take it on vacation without sacrificing a lot of space for packing other stuff. The batteries are cheaper than the
MA2 or
Mavic 2 which might alone be the deciding factor. IMO, with a little skill and practice and care you can fly the Mini indoors, which would be more difficult with the
MA2 or larger drones.
If you were in Canada or a European country where the difference in weight puts you in a different category that makes you jump through hoops with a larger drone the Mini is the clear choice. Vacationing in Mexico, the Mini wins because they have "very interesting" laws concerning extranjeros (foreigners) and drones for anything larger. As far as the
Mini2, like the Mini1 not being "required" to register with the FAA, in the US either way it's a non issue. It takes 10 minutes and $5 to register. And as soon as you put any accessories on it, leg extensions, lights (highly recommended btw) you'll be over the limit and need to register anyway.
But if you're new to UAV beware: This hobby is highly addictive. And perhaps I'm in a different category than you, being a decades long professional photographer, but it only took me 5 weeks to buy a
Mavic 2 Pro after owning my
Mini 1 for weeks. Had I purchased the
MA2 first, I'm certain I would still only own that one drone (at least for now). The
Mini 2 might have delayed the upgrade as it seems to fill in a lot of what the Mini1 might have had.