rednaz23: most of the time SB doesn't even come into play. It's only a tie breaker, one can often find out the winner without calculating the SB.
A simple algorithm based only on the points (total wins) would be simple enough to implement (a sure winner is found when (s)he has more points than every other player in the section, even if they'd win all the games still pending). Like I said, it's simple enough to implement, I think, and still far better than not having one at all for many situations.

As it is now I have almost as many games going as I have tournaments. And trust me that not all those games are from tournaments, so I have many tournaments pending where I have finished all my games a long time ago (and in many of these it's obvious who the winner will be)