Same problem as the gaming mice review
Yes, a lot of people do play MMOs such as World of Warcraft but online gaming takes on a lot of other aspects as well. In games of Starcraft, Heroes of Newerth, Team Fortress 2, amongst others, a delay of 50ms can make much more of a difference than in an MMO where a delay of 200-400ms often does not make a significant impact on raiding or PvP. I should know, I usued to play over a 3G dongle.
In future reviews, can you please try gaming equipment out with other games besides Warcraft? Not trying to be harsh but a variety of different perspectives helps.