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

[Veknoid_Outcast]

I think we have to reclaim the word bias here, because it's not just a preference. It's a decision made before the fact and without sufficient evidence. So it's a pejorative.

That being said, liking a few exclusive titles and disliking some others doesn't make you biased, obviously. However, if for example someone liked only Sony exclusives and enjoyed no Microsoft or Nintendo exclusives, it would raise some alarms. I just don't understand how someone could love Zelda and hate Ico, or hate F-Zero and love Wipeout. Unless he/she was biased toward a particular brand.