In T20s depth in Bowling gives the Edge

                   In T20's too much depth within the batting won't help any side, if it doesn't have an decent bowling unit to cope with it. Yes a good knock from a batsmen can take away the game, but on the other side teams need bowlers to restrict the apposition batsmen as well.
                   Compared with ODI Cricket the dynamics of T20 change on a bigger note, where batsmen look to take charge from 35h or 40th over more often than not. It's where teams need depth in the batting. Even they lose half the side, they can able to carry it in the end overs. But those dynamics won't work in T20's we have seen it through the years and in recent times as well.
                Heading in to World T20 later this month in India, the stats show that teams with better performances with the bowling are able to sustain till to the end of the tournament, Unlike teams with good batting order.
               But in T20's having depth in the bowling really gives the edge than the team with depth in the batting, it don't require a batsmen to be technically good enough to bat down the order. It doesn't matter with technique at the death overs. It matters most with the hard hitting capabilities, most often than not.
                When comes to bowling if a player performs more than a part timer in the side that will benefit the team more than with the one who can bat bit more. For instance Dillshan in srilanka, Malik in Pakistan, Duminy in South Africa, Raina in India and Elliot in New Zealand. These players are not genuine allronders most of the times, their primary role in the team is to play as an batsmen than as an all rounder.
             This kind of depth really helps the teams on bigger occasion's, when ever the front line bowler having an off day in the middle. In T20's No.7, No.8 hardly gets to bat and when they do get it, it's more about hitting the ball hard. So having a player who's role with the ball more than part timer will gives a edge against the team player who's role with the bat is less than a batsmen.