You write your review, you give it the score you feel it deserves. If the editor wishes to change your score and review, then fine, that's their prerogative. You can then put your original review online and show the discrepancies.
Making an anonymous post on a site that contains no real evidence does nothing, proves nothing. If the reviews come out and the score aren't 6 and 10 for SR3 and MW3, respectively, then people will just say it's because of the anonymous poster. If they end up being those scores people will bitch for 10 minutes and then move on. If only one matches the score posited then the bitching will last for 5mins.
I get it, the jobs market is tough and this can put people in a tough financial position. However, this shouldn't be part of the the discussion as to what the correct response should be. Otherwise, all ethical situations should be boiled down to "well, in my defence, I did need the money thiiiiiiiiiis much."
anyway, post some sort of proof or shut the fuck up. At the moment it just comes off a IGN bashing. Don't get me wrong, I have no love or hate for that site, it would just be nice to have proof of the suggested misdoings.