It's still a sports competition. There are no military contests worth mentioning (unless you count wars as such). They are competing with their skills, agility, strength, and stamina. If that's not a sports competition, I don't know what is. Clearly this is not a lan party where dudes like Tatsuya would be sitting in front of computer terminals competing in who can reprogram devices the fastest. Instead we have people competing very much physically (and mentally in a very physically taxing way) and the support working to make sure the equipment is in perfect shape, just like in winter olympics.