This bowl out in Twenty20 is so stupid and childish! Wonder who got that stupid idea and suggested and wonder how other people accepted it ?! First of all, by run rate/ number of wickets fallen, ( Duckworth-Lewis or something like that ) easily a side could be declared winner.
But understanding that you want to make it thrilling in the last minute and all, even then this bowl out looks so disgraceful to cricket. It is not equivalent to penalty shoot out in football/hockey, it is roughly equal to kicking at the goal post without the goal keeper.
Why is it being reduced to only bowling accuracy ? Kicking a goal and defending was what they did it all the time in a football game but in cricket it is more than that. Why not consider batting accuracy and let the batsman hit a ball by tossing it himself in the air ?
Also it is quite simple to bowl at the stumps. Just bowl plain dead slow ball ! I am sure just after few tie-breakers, one will see all the bowls hitting the stumps, then what ?! I think they will be asked to bowl at single stump ?! When that also does not break a tie, they should do it with eyes closed. Wah !
If a tie breaker had to be played, then an extra over each team of normal cricket is most perfect. ( And again, not in an empty field without fielders! ).