I haven't had that much experience with mini convection toaster ovens but I think the air fryer forces hot air that much more forcefully than the former.
FWIW, the heating element is an iron coil like you get in a conventional electric range rather than the wire coil IR elements in a mini over.
I still use my air fryer regularly though I am unimaginative and just make fries (from potatoes I cut up myself). Will have to try the yorkshire pudding tonight if I can find a container small enough.