Was the 1.9 fw in those tests for the 9504 drive? I guess it makes sense that they would get a testing firmware from c4, but if they didnt that might explain the difference between whatever drive they used for LT+ 1.9 and the stock 9504. Im hoping the LT+ 1.9 tests were dont on the 9504 though, for sake of consistency. Otherwise you really couldn't trust the timings. Maybe different models take different amounts of time to respond.
I am interested in what c4 has to say and maybe what he can do about it. Glad to see some questions answered at least.