Are you checking for both 32 and 64-bit installations?
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall
I haven't checked lately but I belive that in version 10 of DRS and below you could not display both 32/64 registry if you used the "browse remote registry" function, but "Installed software" function returns correct results.
In DRS 11 you can browse both 32 and 64 bit registry remotely.
EDIT: Also, Control panel -> Program & Features will not display entries which has Title=<blank>