I wonder if the CC itself was modded to by-pass the Modded tag. I noticed that most of the sims that do not get flagged all look the same - they have that painted-on clothing, shiny skins, super shiny anime-like hair, basically stuff that looks like it belongs in Second Life, IMVU or heavily modded Sims 3, completely different to TS4 Maxis content.
I also find it weird that Gallery doesn't flag sims who use obvious custom poses, when it flags sims with "liberated" outfits that should have been included in the game to begin with (maid/fisherman/gardener outfit for example), or default replacements for eyes or skin.
