250K players is a pretty big number, actually. And typically the peak of concurrent players ranges between 10 and 20% of the player base near a launch window.
It tends to be a bit higher for highly anticipated games and multiplayer titles, but still, it's very rarely above the 30% of the entire user base.
Conversely, we have absolutely NO WAY to check their peak of concurrent players, we just have to take the man's word for it AND it's Randy Pitchford we are talking about here. He isn't exactly stranger to bullshit when he thinks he makes him look good.
Remember when he claimed that he won the name "GearBox" playing poker against Gabe Newell and so the sad man was "forced to settle just for Valve". Except after he told this story to the press a confused Valve representative had to explain that the two never even met before years later.