Discrepancy in AleoMagus' Confidence

[XChamp]

So I have been fiddling around with some stats and I decided I wanted to check out my confidence interval for my last 350 tournies.

So I dug up this post by AleoMagus and followed his directions to a T. I found that I have an 89.5% confidence that my true win rate is positive. Ok, great.

But then I found this confidence calculator, which is also done by AleoMagus. So, I entered in my stats only to find that it gives a 98.3% confidence that my true winrate is positive.

Relevant stats would be:

total number of tournies: 339 $55 Party Sit and Goes.

1sts: 36
2nds: 55
3rds: 48



What gives?

[XChamp]

I figured out what was wrong. I had stupidly not changed my confidence range to +/- winrate.