Well, I'll give a shot. Here's my take on it.
NT's
Would probably take on the role as the antihero, the reluctant hero or the narcissistic hero.
Their powers would be showcased through their logic, such as building deceives to assist them, or in the case of super powers through a freak accident where powers such as personal physical powers or/and mentality-based abilities are gained, as in the case of Peter Parker (Spider-man) and Jonathan Osterman (Dr Manhattan from Watchmen).
NT's are not usually the sort to get involved in the fight against evil unless it personally involves them, such as Bruce Wayne becoming Batman through the death of his parents or Peter Parker taking on the role of Spider-man after the death of his uncle.
NF's
Their powers would probably be showcased through telekinesis, ESP or elemental control. These powers would either be a natural gift or a result of a supernatural event or training such as magic. The use of these powers will be different depending on each personality type, however the INFJ and the INFP would probably showcase their powers in a discrete manner, psychologically rather than physically.
ST's
Like NT's, their powers would be showcased through logic and/or personal physical powers (super strength, super speed etc.). ST's like NT's would probably take on the role of the antihero (mercenary) or the hero (someone who works for the government) taking matters into their own hands or through the law. Using an eye for an eye approach, ST hero's have a strong sense of justice. ST's use their logic and factual thinking to get the job done. Gather information, hunt down the bad guy, kick the bad guy's ass and claim the prize, mission completed.
SF's
Have a strong sense of duty and responsibility when it comes to their powers. SF's would probably take on the role as the classic hero or the martyr. Like NF's, their powers would also be showed cased in a similar fashion, most likely though elemental control and/or personal physical powers. With their powers they would probably want to set a positive example through becoming Superman and saving the day from the villain at bay.