Yes - I am fairly ignorant of the power of bow hunting - guess that is what spawned the thread.Ado,
Just as you recognize the different capabilities of the various rifle calibers, you must realize the same goes for archery equipment. All bows/arrows/broadheads are not the same and different set-ups are capable performing different jobs for different game animals.
From your above comment I believe that you are assuming all bows are the equivalent of a .270 caliber rifle or less...? That's absolutely not the case...
Are brain shots an option on an elephant with archery gear? No... However, an 1,100 grn arrow/broadhead from the proper set up, placed just behind the crease of the front leg will bury up to the fletching and easily take out the heart and usually both lungs. It's a very ethical shot and the same goes for hippos, cape buffalo, etc..
When it comes to stopping charges in general I would think that the PH is the one that most of the time stops the charge and not so much the hunting client.
Even if the latter fires a shot or two in the animals direction during the charge
It is also my impression that the large majority of charges are done by wounded animals and that indicates that the client most likely is not the best suited to hit a charging animal in the right spot anyway.