For those watching the BBC, I question the analysis of Ferrari's improvement.
Alonso was 1.2 off the pace, but had been only 1.3 off with the hard tyres, so I don't think that gap is at all representative. Indeed, most cars - Vettel for example - were improving 1.5 or so from hard to soft.
Whilst I don't want to be overly optimistic, I think Ferrari's improvement could well be far more than the 3 or 4 tenths they were suggesting.
edit: come to think of it, he was even faster on hards this morning, so about 1s off Button's soft pace using hards. Very silly conclusion jumping by the BBC (although far from surprising).