Now, check out the pictures on this Wikipedia page (especially the first one in the gallery).
Which leads me to inspireception: your suggestion suggests that 343i, a Seattle-area company, based their map design off of an at least partially Seattle-based city in a comic by someone who is not from Seattle.
Halo 4 in general has a very "soft" look to it. The obvious culprit is the FXAA, but it joins forces with stuff like a general haziness (the screen-space godrays and bloom contribute here), and a lot of fairly low-contrast (and sometimes blotchy, when it's not low-contrast) environment detailing.
Custom script users are an extremely small minority yet tend to be extremely vocal in these threads, mainly to debug their unsupported unofficial scripts that just broke because we changed something officially, or to brag about how their version of NeoGAF is better than someone else's and promote an extension, or to belittle the official changes because they like their crap better. It's extremely inappropriate across the board.