This sounds like the growth and recovery element which many thought was lacking from the Osborne speech. As it happens, there was actually a growth section in a near-to-final draft of the Shadow Chancellor's address, but it was taken out over concerns about timing.
I suspect the double act - Osborne selling pain, with Cameron selling hope - will work out quite nicely for the Tories, and will become their template in the run-up to the election. The thinking is that it deflects from one of Osborne's perceived weaknesses: that he's not serious or experienced enough to be Chancellor. While it plays to Cameron's strengths: his vitality, and the fact he is seen as a man for Britain's future.