Bangladesh team has created one record after another. It was unimaginable that this team would suddenly make such phenomenal progress. Bangladesh has found several talented players for their squad. And when these players are in form, they are capable of defeating any big team. It was almost impossible to win all the matches in the series against a T20 specialist team like England. Bangladesh has managed to do this incredible work. If the second match of the series against Ireland was not abandoned, the Bangladesh team would have won every match of the series.
Performing against weak teams under helpful conditions may not work everytime. Playing against Australia or England under SENA conditions will be extremely different from what they faced while playing against Ireland. Everytime their spinners are not going to get turning tracks, and the batsmen may be facing world class fast bowlers in pitches having lots of pace and bounce. The ODI world cup is due in a few months, and although the conditions in India are similar to those in Bangladesh, it is going to be a tough challenge for them.
In fact, that's the point, there's nothing to be happy about after securing a victory so impressively against such a weak team. When Bangladesh secures such a victory against the likes of South Africa, Australia, England and India, such a victory should be celebrated.