I've thought that, but I'm not sure that should include Buffalo Bill.  *I think* Buffalo Bill might have vocals from the brothers.  So it that is true, it was meant for a Jacksons album.  Also, we know songs like Liberian Girl could've been on Victory, but that one was obviously held back... And later did make BAD.  Buffalo Bill never ended up on anything.
Based on what we know about Buffalo Bill, I think we can confirm it was so close to being finished and on Victory, that it made news in the media and Bruce did a mix on it.  It must have been left off Victory at the very last second.