Once you get into scales above 1/100th the relative differences become less and less, the difference between 1/140th and 1/144th become considerably less obvious than, say, between 1/35th and 1/40th. The main problem with small figures like this is the a lot of railway figures and architectural model figure such as those coming out of China are impossibly skinny. Human are well rounded, like the figures above, it becomes immediately obvious when they are badly proportioned.