Belgium is a very complicated country ... I'm studying law and I can't even understand all the constitutional structures of our tiny country! I come from the north (the 'flemish' part) but I have studied two years in the souht, so I have become more familiar with this part of Belgium, both with its language and its culture. In general, people stay within their linguistic region and don't know much about each other. We tend to stereotype each other a lot (Walloons are regarded as 'lazy' because their economy is less flourishing than ours, and the Flemish are seen as hard-working, stressed people). Off course, stereotypes tend to be wrong, and so are the belgian ones. I think the biggets problem is the fact that we don't knwo much about each other. Wallonia and Flanders have their own problems and language, they have separate institutions, a separate government and parliament, different roots (walloons tend to be more 'roman' and flemish more 'germanic'). The press treats both girls alike I think. I presume they pay special attention to this, because both girls are popular in both parts of the country and they wouldn't want to loose their readers by reporting negatively about Kim or Justine.
What ennoys a lot of Flemish people is that justine doesn't speek dutch. She must have had some in secondary school as everyone has to learn some french and dutch in both parts. Kim tries to speak french at frenchspeaking tournaments, but she usually speeks english with the press, except in belgium then, where she speaks dutch. Some time ago, when Kim and justine didn't get along very well (at least, that's what we think, because with all the stories in the press you never know what's exactly going on) people of both sides tried to 'communautarize' the whole thing, but it didn't work out as both flemish and walloons cheered for both girls. It's difficult to explain all this, I think Belgians don't really know why sometimes they are being difficult for each other. If you don't understan feel free to ask me!