I updated to 10.10e and the morphological filtering didn't seem to affect the game. It either did, but wasn't noticable, or didn't work at all.
I can confirm that it works for everything else though. I tried Blood money at 0xAA and then at 16xAAMF and the difference was definetly there. I think I'll stick to regular AA though because MF makes everything soft and blurs text.
Must be an error with my AVP install.
*EDIT*
With AVP, in order to apply the AAMF, I had to reboot the game after changing the settings in ccc. I know it worked this time because the FPS monitor from fraps was blurred.
The actual change in-game was so small it's not even worth using.