yup, you're right. it looks like Sy's web script is using and re-calculating all payouts using the overall block reward! that's wrong, because the pool charges a fee of 1% (or it was charging before i disabled it for a few days because of maintenance). I will notify Sy. Stay frosty.
/edit: your payout-blocks are not marked correctly too
it's possible that he's also using rounded values to do his calculations, i don't know