Well...
I had 1,500 points on my Wii to start out with. But then I also purchased two N64 games and an NES title... and that doesn't count the $100 worth of points on my DSi and my wife's DSi (although both of our systems had some points on them to start out with...). Lemme look real fast...
204/236. One of those, I clicked the wrong button and lost at an RB Bundle.
171 of my wins were from 7/25 or before, when every one was a winner. My one failed entry into the RB bundle was in this time frame as well.
64 of my entries have been since the win-ratio has plummeted. Of those, I've lost 31 times and won 33 times - or, about 50% (51.56% win ratio, post drop)