I think you guys are arguing the same thing, but on different sides. Reviewers are bias against reviews but for different reasons. On the HD consoles, they favor sequels and 'going with the crowd'. On the Wii (and to a lesser extent DS), they buck the trend and downscore games they think do too much of 'the same thing'.
In other words, they're hypocrites when it comes to reviewing HD games and give them high scores but when a Wii game, sequel or otherwise, does the same thing, they chastise it and try to prove a point.