So yes, If I was to calculate your average hashrate based on your confirmed and unconfirmed shares for that duration, it would be a higher hashrate, but then the data would be invalid due to the payouts not being calculated on the unconfirmed hashrate.
The reason we use confirmed and unconfirmed shares, is to prevent people jumping on for 5 minutes, hashing at 2GH/s and then leaving and stealing everyones overall payouts. Instead this forces them to work evenly for EACH block found.

If you leave your miner on the pool for 3-4 days solid, you will notice this and exactly how the pool works. I will be writing a document up shortly that will explain how pooled mining works.

If you do have any other concerns, please do let me know.

Btw, there is still 0% fee until I am assured everyone is happy with the pool I am loosing money myself on hosting yes, but I just want to make sure that there are no bugs in the pool before I start charging a fee.