Just looking on Metacritic, PS3 version is at 84%, 360 version at 80%, which pretty much shows the critical consensus (for whatever's that's worth to you) is slap bang between the sites mentioned in the MCV puff-piece.
Walker getting his panties in a bunch over them describing the EG review as "grumpy" seems pretty peculiar to me, calling it out as "despicable" is a pretty extreme reaction to such a mild admonition. Since when has he had such paper-thin skin?
What I find particularly suspect is the way this feud is being spread into the public domain by the use of social media. This is a spat between factions in the media, there's plenty to be gained and lost on both sides.
This whole thing has been shaped as the scrappy little stand-up guys versus the big-bad media machine with the hearts and minds of the game-buying public on the line.
Which of course is not the reality. There are vested interests on both sides. The Eurogamer network is in their own words "one of the world's leading games media businesses", many of the people complaining at MCV's antics are employees of the EG network. There is a definite conflict of interests here, but its being very clearly spun to create a certain impression.
Take for example the hilariously self-serving editorial post on Eurogamer about their review/preview practices. Don't worry kids, our guys wont do the junkets and freebies anymore in case they get brainwashed by the big bad publishers. Like that's suddenly a gold-badge of journalistic integrity. Give me a break, if they were corruptible before they will be just as corruptible now, they just have to be less obvious about it.
They (allegedly) get slapped with a libel threat that noone seems to believe is supportable in law, get rid of the writer then act like they are the one's who's shit doesn't stink!
These guys have enough clout to have their own annual expo, does that not suggest some serious quid-pro-quo in industry circles? How about the way they have cynically drummed up page hits by stirring up fanboy conflict with flame-bait articles, and deliberate controversy?
Not saying that MCV are any better in their own shady way, but this is not the gold standard of reportage.