This is the case right now, Fat Princess doesn't encourage you to play in the right way, the problem lies in ranks.
Everyone is so sensitive about their rank at the moment, so they farm points, instead of playing as a team. I'm looking at you ice mages.
I dropped my rank from Earl to Private yesterday, only because I didn't play as a ice mage, which is kind of stupid as we won almost every game. But ranks are only cosmetic right now, so it's pretty much the same are you a Dutchess or Ensign, but I do understand that people want to keep their current rank, I was excited about the ranks too.
I played as a ice mage, why? Because of the easy points, not because of the support for my team. If you still play as a ice mage only to rack points, it's ok you're free to play the game in the way you want, but expect it to change soon.
I haven't yet read the Eurogamer review completely, as I just got home but I'll try to read it soon and comment it, but for now 6/10 seems a fair score.