Thanks very much, SyRenity, I've PMed you.
The concern re: /r/xcp and /r/counterparty is not that their moderators may be Mastercoin investors, but that their statuses within Mastercoin (ProphetX as an employee and r00tdem0n and mavensbot as /r/mastercoin moderators) suggests very strongly that their position as moderators on Counterparty subreddits poses a serious conflict of interest, especially since, as far as I know, r00tdem0n and mavensbot have not been active participants on this bitcointalk thread.