One example is comparing Killzone 3's lack of volumetric lighting to a game that does it, but only renders 518K pixels. Another example would be comparing Killzone 3's lack of GI to a game that has it; but it has terrible jaggies, poorer animations, poorer audio options, less particles, poorer gun models, less draw distance, tons of pop-in, a non-3D...3D mode, less characters on screen, etc.
Please explain how this gets us anywhere in the grand realm of technical discussions. This problem can't be solved, forum/thread separation or not, without using whole comparisons (or at least more than one or two components) of games.