i think it is a sport, since there are tournaments. If there are tournaments, then i think it should be consdered a sport, nonetheless. it's just like pool, curling, formula one racing, oxing are all sports...hell even wrestling.
and you know whats the sadest thing here in canada, people actually would watch curling(the most stupidest and boring-est...sport ever. were they push these ginormous puck thing on the ice and 2 ppl sweep the ice in front of the puck so it hits all the other pucks from previous tries to get it in the target board on the ice.) over football (soccer).
It is because, they think it's more fun watching that over a 90 min football game. I have no idea what ppl are thinking over here in my country.