I think it's just his math is bad. I'm doing about 8.5g/s on gminer, I think it's just reporting hashes a minute not second. If you divide 8.5 by 60 you get .141 and my accepted speed is hovering around 0.145h/sec on the pool.
Miner display graph per second, pool display hashes per second. To compute one hash miner should find solution, to find solution miner need compute on average 42 graphs.Thus H/s ~ G/s / 42
As a miner, should I care about graphs per second? Obviously I care a lot about Pool accepted h/sec so I care about miner reported h/sec. But do I need to care about graphs/sec?