Sorry to be so negative but I can't take your findings seriously.
The sample size is too small.
The sample lacks any diversity.
How did you manage to obtain [truthfull] information.
You couldn't possibly conclude anything apart from the fact that the people on that forum think that the 360 is better than the PS3. Survey 500,000-1,000,000 people from various parts of the globe and then you'd have a more viable result ( very costly and time consuming but that's the only way.)