Here you have some sample screenshots that Eric Preisz kindly sent us (to easily compare no antialiasing with MLAA, we recommend opening the images in browser tabs, and keep them at their original resolution):
This close-up shows the quality of the gradients produced by MLAA, which is one of its strongest points when compared with MSAA:
We encourage taking a look at the Torque 3D demo to see the whole thing in movement. We believe you will be convinced that MLAA has excellent temporal stability!
Images courtesy of GarageGames from the Torque 3D game engine.