That completely depends on the dog itself. I'll use Tweedle-Dee & Tweedle-Dumb (aka Grant & Harry). My dogs were trained in the same club, on the same decoys.
Grant is a very equipment focused dog. He thinks it's all a big game of tug with a man in a fun tug suit. They put on that fun suit just to play with him. Yay, Grant! Grant would never be able to do stuff like PSA, because he won't go after a hidden sleeve. He will only bite the big, puffy suit, because that isn't a person. If you try to send him on somebody in hidden equipment, or none at all, he gives you this look like you've been smoking crack, and refuses to do it.
Harry, OTOH, was wanting to eat the bad guy even as a little pup. He would spit out the leg sleeve that he had just won, then stare down or start lunging at the now equipmentless decoy. Harry bites the suit because they happen to be wearing it. I have no doubt that he would take a real bite. I need to work him on hidden equipment more and do some muzzle work to make sure. He's mature enough to handle it mentally, now.
Could I make Grant into a dog that would bite for real? Probably, but it would be tough, and probably not make him happy at all. Grant has true, classic bulldog temperament, and has no desire to hurt a human being at all. I don't need that, nor do I want it in a bulldog. That's what Malinois are for