It might be a bit of an over-simplification but you might think of a 9.3x62 as the German version of the 35 Whelen. It uses a slightly heavier bullet than the Whelen but the case capacity is very similar. It is an efficient cartridge that can be chambered in a smaller action (less expensive) than marginally more powerful cartridges such as the .375 H&H and it is often used in rifles with fairly short barrels (commonly around 20").

It was used by many German settlers in the German countries of Africa as their do-it-all rifle. You see it used a lot in countries like Namibia where shots are not long and most of the non-indigenous people are of German ancestry. It is very popular with European hunters and folks that want substantial power but are not fans of heavier recoil.

I borrowed one on a hunt in Namibia once. It is not a long range cartridge but where I used it the shots were fairly short and the brush was thick (with many thorns). It was OK.