The truth was that Henry had not told Mark the full truth about why he wanted him to be a part of this tournament. It was true that Mark's presence there was going to help Henry enter the race for becoming the next General Overseer of the Superhuman Alliance, and it was also true that Mark was going to bring in a lot of viewers for the next tournament.
But that was only half the issue here. The real issue that the tournament had been facing for the longest time now wasn't their inability to bring in viewers, but rather it was their inability to bring in players! The superhumans that they needed to participate in the tournament were just not interested in showing up for it!