Aventurine Calls Out Eurogamer Over Darkfall Review

You know that abysmally low review score Eurogamer gave Darkfall Online yesterday? According to Aventurine's Tasos Flambouras, that review was based on less than two hours of playtime.
The MMO editor warned me personally about the bad review on the way, and I asked him to give us some consideration and get another reviewer on the case since 2/10 is the lowest review they've ever given, and Darkfall's reviews so far have been mostly good ones. It sounded very unfair to me and I appealed its publication. Not even the harshest critics of the game or the trolls on various forums would give it that low a score. This is a niche game we explained and perhaps the reviewer's play-style was completely different and he was maybe the wrong kind of person to review the game. Darkfall isn't for everyone after all, and having someone who can't handle this kind of game write the review would be unfair both to the game and to Eurogamer readers. You can't use the same tool for every job. Eurogamer's MMO editor refused and basically said that he carefully selected a reviewer that would be fair to the game and that he would stand by the review. Then he posted the review.

When we read the hostile review by Ed Zitron, one thing became apparent: he had not played the game at all. Eurogamer readers and Darkfall players are posting bullet lists of factual errors in the story. The reviewer hadn't even figured out the very basics of the game before he wrote about it. We checked the logs for the 2 accounts we gave Eurogamer and we found that one of them had around 3 minutes playtime, and the other had less than 2 hours spread out in 13 sessions. Most of these 2 hours were spent in the character creator since during almost every one of the logins the reviewer spent the time creating a new character. The rest of the time was apparently spent taking the low-res screenshots that accompanied the article. At no point did this reviewer spend more than a few minutes online at a time.
So whose credibility is going to take a bigger hit on this one? And how many hours should a reviewer sink into an MMORPG before critiquing it?