Asia-QT was open the whole month maybe restarted it 3 times , and it only minted once, not @ 100% it was more like 2%,
and atm it still dosent sync.
on my wallet i have got exactly 3.7% for two weeks . did not calculate how this compounds in one year quite possibly it compounds to 100 % per year
That is even a lot more than 100% per year (is around 150% - just calculate 1.037 ^26)
14/365 x 100% = 3.83561%
There is definitely compounding effect but staked coins need to mature for 2 weeks before being able to stake. Your calculation is based on 100% per year. However, the revised POS schedule will reduce the stake interest to 80% at block 72,000. It is part of the reason for the sync issue we are currently facing.
There is also an element of luck as stake interest only even out in long run. AsiaCoin stakers who get a higher % are the lucky ones since the stake rewards are going down over time.