C'mon mate lets get a bit real here, when we had guys like Hayden, Langer, Symmo, Gilchrist in the side, then Australian side could have been rated as the most scary batting line-ups for any spinner to bowl too.
In the current Australian side though, one can't say that anyone else apart from Clarke, Haddin, Hughes and Katich, play spin all that well, and reason for that is simple, there just aren't any decent spin bowlers around in the Aussie FC arena anymore, which hardly allows the upcoming Aussie batsmen to hone their batting skills against spin bowling.
This has even started to show in the way our batsmen have struggled against almost every half-decent spinner they have come across in the recent times.
Swann has struggled in this series because he has bowled badly, its as simple as that, he hasn't really been blown away by the Australian batsmen, it just that Swann has fed them with plenty of loose balls and to their credit they have manged to put those bad balls away, but its also for everyone to see that whenever Swann has bowled a decent spell (which hasn't been too often in this series), he has troubled the Australian batsmen.