I've seen people writing on other boards and YouTube about how they've scored 7mil, 1bil, etc.

I've been wondering what the maximum amount of points possible is in Toribash.
Recently, I've scored about 3 billion points from a 2_katana_joust (or something like that) match online, but some people have claimed they scored 7 billion. Is it possible to score a trillion points?
Also, when I was still in the match (last 20 frames, waiting for the spacebar), it said I had negative points. Do point calculations differ during gameplay and replays?

Oh, and I'm new here too.