the other end of the scale

the other end of the scale
At the other end of the scale,modern industrial societies account for most of the consumption of the world's resources,although within these societies the resources are distributed unevenly among people of different classes.
在这句中,At the other end of the 与On the other hand的区别,is there some subtle difference between them?希望有其他例句...
Full text(Very Challenging) here:
The uneven distribution of food resources is a large and growing problem in the world today.Starvation is widespread in the Third World because of climate change,natural disasters,political turmoil,and wars--all of which disrupt food production and cause mass migrations of refugees.People who are uprooted cannot grow food,and those who are poor cannot buy it.At the other end of the scale,...

这有一个例子:
In our population,it is estimated that there are more than 33 million people with IQ's below 90.
The intellectuals,of course ,are at the other end of the scale.They are people with IQ's of 130 or more.
the top of the scale用在这里的话,就是指智商最高的人.
所以在此at the other end of the scale就有两种事物对比的意思.spectrum和scale类似,都有范围之意,存在两个极端
There's a conflict between their rationally held views on the one hand and their emotions and desires on the other.
这里on the other hand更强调两种事物冲突,抵触,矛盾的关系
顺便问下楼主,你给的例子有没有上下文?可否贴出来看一下?