I think the issue is one of words.
On the originally posted files both have emphasised regions in the upper half of the spectrum. A's emphasis is more of a broad peak in the presence region, B's empahsis starts a bit higher in frequency and remains booted more like a shelf EQ.
The difference in perception and interpretation of that into words gets confusing. Thin brittle and tinny might acurately describe the presence region boost. More high end boost and airy may accurately describe the higher shelf boost. I think brighter is the somewhat more confusing term use used here, as it could describe either, depending on perspective.
Dancing about architecture.