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.
I drop knowledge so heavy it leaves the world unbalanced, exterminating the spiritual force of all that challenge, I'm the lyrical apocalypse that crumbles the granite, replacing you as the dominant species on the planet.