None. The amount of time I play is casual, but my knowledge and breadth of games I've played is broad. Probably because I used to be more into them, but have had less and less time. But hard core gamers being better skilled? Puhleez, they usually lack a higher education and therefore lack some higher forms of thinking that can be put to good use in strategy and tactics. Although I think we may have different definitions of hardcore, the author doesnt go into much depth in defining the terms.
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