Regarding the whining about anti aliasing not working....

[Ataros]

Originally Posted by Liz Lemon

Because getting true AA working with a deferred rendering pipeline is very, very difficult - and some of the greatest programmers working in real time 3d haven't been able to figure out how.

Yes, now it is much more difficult than 10 years ago.

One more rather important disadvantage is that, due to separating the lighting stage from the geometric stage, hardware anti-aliasing does not produce correct results any more: although the first pass used when rendering the basic properties (diffuse, normal etc.) can use anti-aliasing, it's not until full lighting has been applied that anti-alias is needed.

http://en.wikipedia.org/wiki/Deferred_shading

Sadly not everyone makes his research before posting which makes some posts look like ignorant speculations aimed to insult developers.