As Ribdog says,the Team Mom/co-cook/spouse,is often pulling pork for comp boxes and it must be as close to perfect-as you can get it.
Rule of thumb,is usually 50% bark.
That is your flavor.
Now,commercially,folks may try to get as much pork to serve,as they can squeeze out.
Undercook it, to about 170* internal,cut the bone out[because you can't pull it out-at that temp],fine chop it with two cleavers[fat,gristle,and all].
Other areas ,that cook shoulders,or whole hogs,trim out the bones and toss all the meat pieces into a buffalo chopper.
These two methods can yield up to 1/3 more weight.
My guess is that most inexperienced cooks,use so little rub,they could never overpower the mixed meat.
Many good cooks find that bark still can't give enough flavor,so they sprinkle in a little of the finely ground rub,they use on the exterior.
A little fine vinegar sauce,like Smokin's ,can perk up the flavor-without being saucey.
There is no "secret",just learn to use what ACCENTS,the pork,and take good notes-as Smokin' keeps saying.