Schumacher's run, in which he did the fastest lap of the test so far, wasn't a low fuel one: 20.3, 21.3, 22.0, 22.6, 22.9, 23.8, 24.2, 24.2, 24.1, 24.6.
But it took a lot of laps for his times to stabilise and when they did he was around one second slower than where the Red Bull was yesterday, and where Massa is on his current run.