Pakistan V Bangladesh
Bangladesh lost against Pakistan by 21 runs. We know the Bangladesh team is weak in the T20 format. But I wouldn't say that their performance was bad. Pakistan set a target of 168 runs. Apart from Mustafiz and Hasan Mahmud, the performance of Bangladesh's bowlers was quite good. Taskin managed to pick up two wickets for just 25 runs.
As usual, the performance of the batsmen of the Bangladesh team was very poor. Apart from Yasir Ali and Liton Das, I don't think any batsman's performance is good. If the performance of the batsmen does not improve and consistency does not come, then Bangladesh will not be able to win a single match in the next World Cup.
Bangladesh loses by 21 runs to Pakistan in Christchurch. While Bangladesh bowlers do well, their batting order is a significant concern, and it will cost them in the upcoming T20 World Cup. It was a very good win for Pakistan thanks to the bowlers who bowled well. It will also prove useful during the World Cup. It was another excellent performance by Muhammad Rizwan as he maintained his excellent performances in the tri-series as well.
The first match at Christchurch and Pakistan won the match as expected. Pakistan is a much better team than bangladesh and this result was obvious. Another thing that contributed to this win was the Mohammad Rizwan 78 runs not out. If Pakistan opener Rizwan or Babar play well, it is always hard to beat the team Pakistan. The real test of the Pakistan team will be againist New Zealand as NZ are most strongest in thier home ground.
Despite having many T20 specialist batsmen in the West Indies squad, they are not able to play well. If the batsmen lose form like this before the World Cup, it does not seem that they will be able to play well in the World Cup.
Betting on Australia in this T-20 series against West Indies was easy money for me. I felt that the odds were decent too in both matches. 
West Indies have been struggling across all formats for sometime now which is why them getting whitewashed in this manner isn't surprising at all. They have zero chances of winning the T-20 World Cup this time around if you ask me.
West Indies without Chris gayle is the weakest team and I also do not accept them to show any good performance. In this match, David Warner scored 75  and Tim David scored 42 which were enough for them to win this match. 
178 was too big a score for West Indies and their batting line up is not so strong to chase this big target. They were all out at 147 runs and it was a one sided match. Johnson Charles scored 29 runs ad it was the highest individual score for the West Indies.