How come if you don't like an exclusive title you are automatically biased?

[Jay520]

JayWood2010 said:

Jay520 said:
That's the definition of bias.

So because I don't like Gears Judgement I'm biased toward MSFT?  Or does that just mean I don't care for the game?

I think you mean biased "against"

If you tend to like one company's game over another, then you are biased. You don't even have to have fanboyish reasoning. So long as you have an inclination, you're biased. We're all biased unless you happen to enjoy Sony games in general as much as Microsoft games and Nitnendo games. That's rarely the case though. 

Definition of BIAS

b : an inclination of temperament or outlook; especially : a personal and sometimes unreasoned judgment : prejudice

Note that having unreasoned judgement is not a requirement to be biased.