I can remember watching one day games in the 80s when anything over 200 was regarded as a big score. Rarely even close to par nowadays. The great thing about T20 is how quickly it can swing. Yesterday and today the chasing team looked to be in trouble, then one big over shifts the pressure back on to the bowlers. With 4 overs left you wouldn't have backed either the Kiwis or Australia to win with an over to spare.