which is more popular MTG or Yugi-oh?

[lg07@f5.si]

I think yu-gi-ho

[coldkestrel]

I think this depends entirely on what people you hang out with. People are much more likely to play one or the other (or at least to be publicly known as doing so, which is what this perception is about) if they know someone who also plays and want to play with them. So the fact that you've seen people commonly playing one specific game doesn't really mean much.