ReactOS x64 can't run VirtualBox Guest additions 64-bit setup

Tested software/driver: Virtual Box Guest additions from VBox Versión 6.1.18 r142142 (Qt5.15.2)
ReactOS version: BootCD 0.4.15-dev-2738-gbe65a85-x64-msvc-win-dbg

Behavior:
It should be like in XP64bits, but it splash a error of wrong architecture.

Screenshots:
Error 1 - AMD64.png
Error 2 - AMD64.png

I tested the same .exe with Whistler XP 64 Professional (5.2.3790.1218) and it installs and it can be used (no WOW64 needed apparently). It splashes confirmations for the drivers to be installed.
[XP64 installing.png]

Debug log: Windbg - ReactOS x64 VBox.txt