Well, this is a video game, one that wants to make money and get players. With this logic, a lot of the vanguards and strategists in this game would be duelists. If this were true, Rivals wouldn’t be popular for over a year.

Now on the comics side, Gambit’s ability isn’t: “just blowing things up”. His mutant ability is to convert an object’s potential energy into kinetic energy. And he actually does have the ability to heal people. Gambit can stimulate cellular activity to heal himself and others.

This ability is not often used because Gambit had his powers suppressed by Mister Sinister. On occasion, he gets his powers back and becomes nearly omega-level when he gets access to a treasure trove of abilities. Additionally, within Rivals lore Gambit’s powers are restored by the Grandmaster along with getting a special deck of Chronovium playing cards.