Eugene Miya answered this fairly well but I will repeat one point. Avalanches. Annapurna is dangerous because the best route up the mountain is incredibly succeptible to avalanches. read more
Annapurna is dangerous because the best route up the mountain is incredibly succeptible to avalanches. It gets a lot of snow, and a good deal of the mountain is at 38 degrees of steepness which is perfect for avalalanches. read more
Annapurna is the most dangerous Mountain in the world. This is a life taking mountain. Climbing this summit totally depends on your luck and the hard work you have done. read more
So altitude certainly adds to difficulty, but when you throw in altitude plus actual technical climbing then it makes things that much harder. Everest has been getting safer and safer, better gear, better forecasts, help a lot. Interesting fact. Annapurna was the first 8000 meter peak to be climbed. read more