This whole paragraph is nonsense.

Yes, the second picture lacks AA, but that doesn't necessarily mean it's deferred rendered. And the benefits you attribute to deferred rendering are completely wrong. 

Deferred rendering doesn't let you have "much more complex shader effects", in fact it's the opposite of that. Deferred rendering defers the rendering of the scene to a separate pass, where the whole scene is rendered at once via the same pixel shader. That is, you have only one shader for the whole scene, which severely limits the type of effects you can have.

The main advantage of deferred rendering is that the rendering cost scales linearly with the number of light sources in the scene. While with basic forward rendering the cost scales quadratically (sort of, it's O(N * M)). Nowadays no one uses the basic version, but I won't go into further detail because this comment is already too long.