2. The power rating isn't a measure of how GOOD your team is, that's something that computers can't really calculate. It's just a measure of how high the stats of the pokes are. So technically it's better to win with a team with a LOWER power rating to show off your skillfulness.

That's funny... my standard team is 69%, whereas my severely UU team (which is use primarily) is 72%. I'm not sure that's working too well. This is for an RBY team btw.

But all in all, I like NB for the RBY mode a lot, haven't tried for GSC. Fast, pretty accurate, and actually an attractive interface in a battle simulator.