Whilst I'm not completely against the notion that the people who vote on The X Factor might be biased, I think being average/forgettable was the killer tonight.
Alien Uncovered were forgettable, and 4th Impact smashing their performance didn't help matters.
Bupsi was given an un-charismatic song and sang it averagely.
Keira doesn't have as big a personality as the other contestants in her category, therefore forgettable, plus her song on Saturday was pretty average. Tonight was a lot better.
People like Anton have big personalities, and although Max was given an atrocious remix, it stuck in people's heads and if you're anything like me, you can still appreciate his good vocals.