simple. the same way indian and pakistani fans thougth their teams had a realistic shot at the 07 championship: its called over-optimism.
but if you look at the distance travelled by BD from 03 to 07 and project that for 07-11, then it makes a lot of sense.
whether that improve keeps going at the same average rate is a completely different assumption, however.
Cricket cannot live with the mistaken belief that people want to see big hits. People like to see goals, but no one is talking of moving the goalposts a metre wider either side. (Harsha Bhogle)