I have been around horses/mules and donkeys my whole hunting life and I will take a good quarter horse over a good mule for hunting..I also have seen more than one hillside torn up from horses and mules not wanting to pack game or are just in the mood to be ornery that day.
A good hunting animal is one you raise from a baby just for that.I have held on to the tail of a nice palomino which pulled me up the steep trail with half an elk on it's back with it's "master" leading it.
It also was the family pet in Eagle Idaho in the old days and stuck it's head through the kitchen window..
There both good but once you have either and only use it for hunting,your in for a surprise.I have had over 20 horses and mules in my day and can't afford them anymore as they are spendy as hell anymore.
Just my opinion...Jayco
