Guild Wars 2

I just finished the Story Journal Achievements and noticed that the three Achievements done in ‘Fallen Hopes’ only give 1 AP per achievement, while the ones done in the other two story instances give 5 per achievement.
Especially considering the ‘Disturbance in Brisban Wildlands’ achievements as quite easy compared to ‘Fallen Hopes’ this seems quite odd. Why is this? Was it a mistake?

I think it was intentional.

Many people find jumping puzzles very difficult to do for various reasons, e.g. Disabilities, lag, etc. It’s likely ANet added the achievement for those who want a challenge but kept the points low so as not to be unfair to those who can’t do jumping puzzles.

Yes, I understand your point. But those who can’t jump (for whatever reason) won’t be completing many jumping puzzles, thus having the ‘unfair’ disadvantage of missing out many AP in that category as well.
I’m a huge fan of jumping puzzles, it’s part of the reason why I love this game that much. But I found it not easy to get up there (and down safe). Also, ‘No Rock Unturned’ does acutally not require much jumping skills and also just gives 1 AP.
They wanted to make achievemets something you have to achieve again, why not reward them equally?