consider having a read of Dr. Ashby's broadhead and arrow penetration results. he worked out an arrow/ broadhead system to get consistent lethal penetration on adult water buffalo with a 40lb recurve.
Number one most important is that the arrow and broadhead including all the hardware, dont break or bend on impact.
he found that if you hit bone, the single bevels are much better. in soft tissue no big difference, also a longer, slimmer head like a grizzly gives better penetration that a short stocky one.
there is a top 10 of the most important factors. for people like me shooting relatively small bodied goats with 60lb bows, it doesnt matter as much since i get complete pass thrus every time.
but for yourself, with a big hog and a lighter bow, it makes sense to take the effort to give yourself the best chance at a humane kill.