There is more than one view point. Some worry most about accuracy some about bullet capability, if you do a miscomboble the better bullet helps but if you precisely place a shot any decent bullet will do the job. If you have both the precise accuracy and the most appropriate bullet [this changes with different animals and ranges ] then you get the best results. I believe that to many hunters do not know the spot to hit for an instant kill.
So when all is said and done the accuracy, bullet capability and hunter knowledge and capability all play an equally important part in doing the job well and right.