Josh Sawyer from Obsidian on the opinions of EA/Beta test Gamers:
"Your audience is self selected to the most hardcore enthusiastic people. They give very good feedback but it is also feedback for psychotic gamers. They...like...have the strongest opinions , they are going to grind your game into the dust. It is very valuable but it can kind of skew your understanding of how your game plays for a wider audience."
From Josh Sawyer, Breaking the Mold RPG Revolution - the PoE2 Post Mortem.