It appears that you are correct. The hotfix address several issues, including detection of AF drives via USB, adding AF reporting capability to several storage drivers, updates to the fsutil tool, and ensuring that the OS writes the full 4KB physical sector. Microsoft’s document stipulates that “this fix is dependent on the storage driver and the disk both reporting the correct physical sector size”. Since your AF drive does not appear to identify itself as such, ISTM that the benefits of the update are not available to you.
An update that improves the compatibility of Windows 7 and Windows Server 2008 R2 with Advanced Format Disks:
"Before Advanced Format disks were available, NTFS assumed that the logical sector size that was exposed by the disk interface was equal to the physical sector size of the disk. Although NTFS was originally designed to theoretically support larger sectors sizes, NTFS assumed that these two sector sizes were equal. When NTFS performs buffered writes at the end of a file in Windows 7 and Windows Server 2008 R2, NTFS pads the write operation to the end of the sector size which is exposed by the disk interface (the logical sector size). This behavior guarantees sector alignment. However, because the size of a logical sector of a 512e drive (“512-byte emulation disk”) is 512 bytes, the buffered write does not align to the physical sector size of the drive’s hard disk. This causes the Advanced Format disk to internally update the 512-byte logical sector within its 4KB physical sector, which can result in performance and reliability issues.
This hotfix introduces behavior to NTFS which makes sure that buffered writes at the end of the file are padded to the reported physical sector size of the disk."