Nepal has a small chance of defeating teams such as Bangladesh and Zimbabwe (in T20s). But I don't think that they'll be able to beat Afghanistan. The Afghans are a level higher up, when compared to the other teams mentioned here. And unfortunately Nepal will not be a part of the 2020 ICC T20 World Cup, as they failed to qualify (lost to Singapore in the Asian qualifiers).
I think your post is baseless, how do you think Afghan is up and Nepal will not be able to beat them? Nepal will be able to beat Zimbabwe, for your info Zimbabwe beat Afghan some days ago, you think it as a rare case? Well, in that case, Afghan beat Bangladesh is also the same. Bangladesh also beat Afghan in the 2nd match.According to the ICC T20 rankings, Afghanistan is among the top-8 T20 sides (they are currently ranked #7), and therefore they qualify for a direct slot to the T20 world cup. They don't need to play the qualifier tournament. On the other hand, Bangladesh is ranked 10th and Zimbabwe is at the 14th position. They don't get a direct entry to the world cup. The ranking suggests that Afghanistan is a far better side when compared to both these teams, at least as far as the T20 format is considered. And Nepal is currently ranked 11th, just below Bangladesh, but above Zimbabwe. Also, Zimbabwe is unable to field its star players such as Kyle Jarvis and Brendan Taylor, as they don't have enough funds after their termination from the ICC.
Any team can be beaten if there is an extra ordinary performance and it is rare we see those often.
It will be rarely happened which was the case in the last series, however, Afghan played well, it can no be denied. They have developed a lot since the previous. But still they are not as strong team as Bangladesh, I think. We were unfortunate that we lost the test.
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