well the natives hunted from horse back with short bow adn short draws
they could kill bison and many other large game animals with their gear,so i dont think that this
would be bad for deer sized animals.
my state has a minimum draw weight of 35# for deer and turkey
its not so much how heavy a draw your bow has,its got a lot more to do with shot placement
a well placed shot from a 35# bow will kill just as dead as a well placed shot from a 70# bow
dead is dead
as long as you can put the arrow where it needs to be