However, in T20s, the United Arab Emirates is much weaker than Bangladesh, so Bangladesh will benefit from its weakness.
Now you should say that Bangladesh is weaker than any other team in T20 format. They have lost the second match against UAE, which is a big shame for them. Bangladesh isn't playing with a weak squad there. The presence of Mustafizur would have made some differences. Still, it is a big shame for Bangladesh to lose the match after giving a target of 200+ runs.
While I do agree with sithara's argument of unpredictable nature of T20 format but I bet if all test nation teams start playing associate on regular basis or let's say for world cup qualification then Bangladesh would be best candidate to shit the bed.