The pools have no idea with what you're using to hash. All they see is submitted shares and they calc your rate based on submitted shares. You can theoretically mine for 5 min and not submit a single share - during those 5 min the pools has to guess your hash rate is 0.
If the 24 hour average is lower that what your machine says you're losing to disconnects, latency issues causing stales, or just dumb luck of not finding shares despite having the power.
Variance of 5% is normal, so those puny miners won't do anything to the stats really. Anything more should be investigated.
Yep obviously I realize that 10-11 GH is nothing. I have other higher end miner also, but have only (so far) seen this discrepancy with the BE Blade, which is why I was curious if there was any sort of "known issue".
Thanks