Using my highly unscientific methods, if we apply the 45=50 batting average theory then Steyn has a bowling average of 18 and Swann 21
Whoa! Murali would have averaged something close to 15 if that method used!
But for Swann big test lies ahead. Bowling against Sehwag, Tendulkar and Raina (if he makes the team) will show how good he is actually. If the Aussie wickets are usual roads that used to be that will be a big test too.