Why do they come in so many different sizes then?
Axes? Depending on the intended target. Large trees and professionals- heavy axes on long handles.
Thin branches, cleaving firewood - light, short handles.
Axes can be used to cut, rough cut.
I did a deer once with a hatchet, just for fun. Worked, but a Knife is better, with a saw forthe bone cuts.
If you mean knifes, most trad knifes were thin. Look on one of the most versatile edged tools, the machete.
Does everything from slicing soft tissue to ckearing bushes with stems many inches across.
I marvel at the skill of my gardeners, when they prepare a coconut to refreshen themselves. Artists.
The Same would feel at home with OP's knife. Design, size.
I think it would make a good Reindeer marking knife!
​
​
here we go again. 
