berserk don't give extra points

game:
http://en.lichess.org/ZjWWuZdc
tournament:
http://en.lichess.org/tournament/carCmu2V

Berserk gives the extra point only if each player has played at least 7 moves.

Hm, it's interesting, thanks.
I think it will be helpful if put information about 7 moves in Tournament FAQ: http://en.lichess.org/tournament/help?system=arena

I think an exception should be made for atomic, the games can end quite quickly.

very true