I mean #1, not #2 above. The data that is downloaded in #2 depends on the specific visualization shown (e.g., if your color-map is showing Z-scores you’ll download something different than if it’s showing log2 intensity, and if your Resolution is “Structures” you’ll download something different from if it is “Samples”).
See more details at this post: Reproducing r-score correlations in Allen Human Brain Atlas - #2 by jeremyinseattle .
Unfortunately, I’m not sure exactly how the fold change and p-values differ between methods. The complete set of documentation for human brain atlas is here: Documentation: Human Brain Atlas