I haven't used motor admin extensively so I couldn't speak about it's features very precise. It seems to me that motor admin is like a giving a power tool to your end-users. It's empowering the citizen-developer. They can make their own admin panel. You might end up with a good product, but it also can go the other way and build something not that good.

With Avo, you, the developer, draw the lines on what the user can and can't do. This way you make sure you give them the best experience.